| 单词 | sulfuric |
| 例句 | Like Venus, our stratosphere even now has a substantial mist of tiny sulfuric acid droplets. Cosmos 1980-01-01T00:00:00Z In the burning of coal and oil and gasoline, we are also putting sulfuric acid into the atmosphere. Cosmos 1980-01-01T00:00:00Z It is always raining sulfuric acid on Venus, all over the planet, and not a drop ever reaches the surface. Cosmos 1980-01-01T00:00:00Z The night air grew thick and sulfuric around us. Summer of the Mariposas 2012-10-20T00:00:00Z The fourth box contained dynamite, which was disguised to look like lumps of coal, incendiary pencils, timing devices, fuses, primers, wire, screws, and sulfuric acid. Nazi Saboteurs 2019-12-03T00:00:00Z However, the surface of the planet is a scorching 467 degrees Celsius, the ground is barren and rocky, and clouds of sulfuric acid roam the atmosphere. We Are the Ants 2016-01-19T00:00:00Z At 60 kilometers, we plunge into the clouds, and find ourselves surrounded by droplets of concentrated sulfuric acid. Cosmos 1980-01-01T00:00:00Z The clouds of Venus turn out to be chiefly a concentrated solution of sulfuric acid. Cosmos 1980-01-01T00:00:00Z In England this latter practice developed about 1951 as a result of a shortage of sulfuric acid, formerly used to burn off the potato vines. Silent Spring 1962-09-27T00:00:00Z My inner Juan squirmed as we checked into a hotel that was seeped in stinky sulfuric fumes, right down to the sheets. | Personal Journeys: A Cross-Country Drive With a Guru 2012-05-20T05:44:06Z They offered strips of hot, juicy fat and grilled petai beans, known for their sulfuric stench but delicious flavor. Personal Journeys : Back to Borneo, and an Eden at Risk 2014-02-21T19:03:43Z Priestley reacted chalk with sulfuric acid, producing CO₂ and he hung a water-filled container over the reaction to infuse the water with CO₂. The bubbly chemistry behind carbonated beverages 2023-08-14T04:00:00Z When fresh onions are cut, they release a sulfuric gas that causes tears to stream down your face; the older the onion is, the stronger the gas is and therefore, the more heartbreak you'll experience. The unfailing way to make any onion last forever 2022-03-24T04:00:00Z A masked man walked up to him in the parking lot, called out his name, and threw sulfuric acid in his face. The Power Plays at the Bolshoi, On Film 2015-12-21T05:00:00Z The sulfuric churning — the torture and terror and ambivalence and uncertainty — of faith, or Catholicism in the work of Scorsese and Abel Ferrara always gets sunnily allegorical with Spielberg. 2004: ‘Fahrenheit 9/11’ and a Country at War With Itself 2020-06-30T04:00:00Z Morton successfully trialed the first use of sulfuric ether as an anesthetic on a surgical patient. Perspective | Knock yourself out in the Ether Dome 2019-10-09T04:00:00Z In the underworld Orfeo’s way is initially blocked by a chorus of furies and shades, depicted as a tangle of writhing bodies dressed in sulfuric yellows and grays. Music Review: Muti Directs ?Orfei ed Euridice? at the Salzburg Festival 2010-08-02T21:59:00Z By changing the molecules’ structure — by heating them, for instance, or adding sulfuric acid to form new compounds — early flavor scientists could alter their sensory qualities. What in the World Is a $590 Scratch-and-Sniff T-shirt Doing in 2020? 2020-11-02T05:00:00Z A jar of sulfuric acid was tossed in his face; the assault, it was later discovered, had been engineered by a disgruntled dancer in the company. Sergei Filin of Bolshoi Ballet Discusses His Work and a 2013 Acid Attack 2016-05-02T04:00:00Z With chaotic yet charming cobblestone streets, dome-shaped bathhouses steaming with sulfuric waters, and crumbling Soviet factories repurposed as hipster hotels, Tbilisi is a study in contrasts. 36 Hours in Tbilisi 2018-06-07T04:00:00Z She submerged some of the tied wire works in sulfuric acid for weeks at a time, enjoying the crusty, greenish growths that formed on their surfaces. Is this the most beautiful show of the year? 2018-09-18T04:00:00Z A geologist, Maurice suggests, is someone who paddles an inflatable canoe into a lake of sulfuric acid, while a geochemist has the good sense to stay on shore taking measurements and collecting samples. ‘Fire of Love’ Review: A Volcanic Romance 2022-07-06T04:00:00Z He wears them even in this darkened studio, ever since he was targeted in a Mafia-style revenge plot last year, when a thug hired by an embittered Bolshoi soloist threw sulfuric acid in Filin’s face. Nearly blind from an acid attack, the Bolshoi Ballet’s director still has an eye for beauty Temperatures hover around 860 degrees Fahrenheit day and night, and clouds of sulfuric acid float in its atmosphere. Billions of Years Ago, Venus May Have Had a Key Earthlike Feature 2023-10-26T04:00:00Z The investigation revealed that the metals are accumulating within sulfuric acid particles, which constitute most of the stratosphere’s particulates and influence our world’s ozone layer and climate. Space Junk Is Polluting Earth’s Stratosphere with Vaporized Metal 2023-10-26T04:00:00Z Acid rain—precipitation with high levels of sulfuric or nitric acids—is mostly caused by sulfur dioxide, a gas that is produced when we burn coal. The World Solved Acid Rain. We Can Also Solve Climate Change 2023-10-25T04:00:00Z The report noted a few factors that counteracted cost increases like higher credits for the sale of molybdenum and gold, the decrease in the cost of sulfuric acid, freight and diesel. Chile's Cochilco says large-scale copper mining costs keep growing 2023-10-24T04:00:00Z The atmosphere is filled with carbon dioxide and sulfur dioxide, and sulfuric acid rain clouds cover the skies. What It Takes to Grow Crystals in Space 2023-10-23T04:00:00Z Materials scientist and aeronautics expert Debbie G. Senesky designs electronics resilient enough to work on Venus—where the surface is hot enough to melt lead, and the skies rain sulfuric acid. Women Who Hunt, Organ Transplants and 50 Years of the Endangered Species Act 2023-10-17T04:00:00Z Rather they were targeted at studying sulfuric acid particles and other stratospheric aerosols. Space Junk Is Polluting Earth’s Stratosphere with Vaporized Metal 2023-10-26T04:00:00Z Nearly 10% of large sulfuric acid particles -- the particles that help protect and buffer the ozone layer -- contained aluminum and other spacecraft metals. Signatures of the Space Age: Spacecraft metals left in the wake of humanity's path to the stars 2023-10-16T04:00:00Z Armed with scent glands that can squirt sulfuric secretions into a predator’s eyeballs, skunks are fortunate to not have as many natural predators as other similarly sized mammals. Skunks can lose their stripes—and now we might know why 2023-10-06T04:00:00Z By placing a cloud of what becomes sulfuric acid in the upper atmosphere continuously, the process would shield the Earth from the Sun, cooling it. Climate intervention technologies may create winners and losers in world food supply 2023-10-05T04:00:00Z Transition metals form catalytic complexes that can speed up various chemical processes, especially in the production of pharmaceuticals as well as various pigments, dyes, and laboratory reagents like sulfuric acid. Novel ligands for transition-metal catalysis of photoreactions 2023-09-19T04:00:00Z “There also needs to be laboratory research to investigate the consequences of adding these metals to sulfuric acid particles. Can the particles nucleate ice and impact clouds and chemistry in the stratosphere?” Space Junk Is Polluting Earth’s Stratosphere with Vaporized Metal 2023-10-26T04:00:00Z The team calculates that means that, in the next few decades, up to half of stratospheric sulfuric acid particles would contain metals from reentry. Signatures of the Space Age: Spacecraft metals left in the wake of humanity's path to the stars 2023-10-16T04:00:00Z The mine process moves clay deposits from the open pit to the processing plant that filters the ore and treats it with sulfuric acid to produce lithium carbonate. A new era: Construction of strategic lithium processing plant kicks off 2023-09-06T04:00:00Z Some have more than 200 cars and carry hazardous materials such as propane gas, sodium chlorate and sulfuric acid, said Bellefleur, who is among those pushing for the construction of the bypass. After deadly oil train wreck, change comes slowly for devastated city 2023-07-07T04:00:00Z Like the NewRange and Twin Metals ore deposits, the metals are bound up in sulfide minerals that can generate sulfuric acid when exposed to the environment. Proposed Minnesota nickel mine begins environmental review, would supply Tesla if approved 2023-06-21T04:00:00Z Figure 20.16 Sulfur dioxide from the atmosphere becomes available to terrestrial and marine ecosystems when it is dissolved in precipitation as weak sulfuric acid or when it falls directly to Earth as fallout. Concepts of Biology 2013-04-25T00:00:00Z Beyond carbon dioxide, its atmosphere is, unlike Earth's, filled with churning yellow clouds composed of malodorous sulfuric acid. Only two solar system bodies have active volcanoes. Make that three. 2023-03-22T04:00:00Z Venus is sometimes called Earth’s “evil twin” because its scorching-hot surface is swathed in a dense carbon dioxide atmosphere that traps heat, its skies filled with clouds made up of droplets of sulfuric acid. How did Venus become such a hot mess? Volcanic discovery offers clues. 2023-03-15T04:00:00Z Choked by a smog of sulfuric acid and scorched by temperatures hot enough to melt lead, the surface of Venus is sure to be lifeless. Active volcano on Venus shows it’s a living planet | Science | AAAS 2023-03-14T04:00:00Z What came back was a score marked by a booming, sulfuric war call played on a heavily amplified harmonium. Why Edward Berger's teen daughter got the last word on 'All Quiet on the Western Front' 2023-03-01T05:00:00Z Environmentalists have opposed the mine because the copper and nickel in the Duluth Complex are bound up in sulfide minerals that can leach sulfuric acid when exposed to water and air. PolyMet mine in Minnesota becomes NewRange Copper Nickel 2023-02-15T05:00:00Z Ms. McCollum maintained the area’s pristine freshwater faced likely contamination from heavy metals and sulfuric acid from mine tailings that could have spread through the Boundary Waters’ 1.1 million acres of interconnected lakes and streams. Biden Administration Sets a Mining Ban in Boundary Waters Wilderness 2023-01-26T05:00:00Z Because Io is far from the sun and has a very thin atmosphere, its surface, on average, sits at around minus 200 degrees Fahrenheit, and it is coated in a frosty layer of sulfuric compounds. A New View of the Most Explosive Moon in the Solar System 2023-01-25T05:00:00Z "The results show that the influence of ozone and sulfuric acid on soot aging alters cloud formation and, ultimately, the climate," reported the Swiss National Supercomputing Center. Building bridges to the future: Infrastructure, the climate crisis and the pandemic 2023-01-14T05:00:00Z The potential risks to plants and wildlife come from the sulfide ores; the ores, in which materials like copper and nickel are lodged, can leach out sulfuric acid and heavy metals. This Remote Mine Could Foretell the Future of America’s Electric Car Industry 2022-08-30T04:00:00Z Both plates are immersed in sulfuric acid, the electrolyte for the system. College Physics for AP Courses 2015-08-12T00:00:00Z Sulfur dioxide also forms when many reducing agents react with hot, concentrated sulfuric acid. Chemistry 2019-02-14T00:00:00Z This occurred in 1783 when volcanos in Iceland erupted and caused the release of large volumes of sulfuric oxide. Biology for AP Courses 2022-06-09T00:00:00Z In the upper troposphere, between 30 and 60 kilometers above the surface, a thick cloud layer is composed primarily of sulfuric acid droplets. Astronomy 2016-10-13T00:00:00Z She needs to make 200 milliliters of a 40% solution of sulfuric acid for a lab experiment. Elementary Algebra 2020-04-22T00:00:00Z The result is a mild solution of sulfuric acid and nitric acid. Environmental Biology 2018-09-06T00:00:00Z For example, when ethanol is treated with a limited amount of sulfuric acid and heated to 140 °C, diethyl ether and water are formed: Chemistry 2019-02-14T00:00:00Z Figure 37.22 Sulfur dioxide from the atmosphere becomes available to terrestrial and marine ecosystems when it is dissolved in precipitation as weak sulfuric acid or when it falls directly to the Earth as fallout. Biology for AP Courses 2022-06-09T00:00:00Z There are microorganisms that “breathe” metals that would be toxic to us, and even some that breathe in sulfur and breathe out sulfuric acid. Astronomy 2016-10-13T00:00:00Z We multiply the number of units times the concentration to get the total amount of sulfuric acid in each solution. Elementary Algebra 2020-04-22T00:00:00Z Sulfur dioxide from the atmosphere becomes available to terrestrial and marine ecosystems when it is dissolved in precipitation as weak sulfuric acid or when it falls directly to Earth as fallout. Environmental Biology 2018-09-06T00:00:00Z We need to know the number of moles of sulfuric acid dissolved in the solution and the volume of the solution. Chemistry 2019-02-14T00:00:00Z In one of the film’s more harrowing episodes, shot in Indonesia in 1971, Maurice incurs Katia’s wrath by sailing a rubber dinghy into an enormous lake of highly concentrated sulfuric acid. Review: As both a doc about volcanoes and a scientists' romance, 'Fire of Love' kicks ash 2022-07-05T04:00:00Z Thick clouds at altitudes of 30 to 60 kilometers are made of sulfuric acid, and a CO2 greenhouse effect maintains the high surface temperature. Astronomy 2016-10-13T00:00:00Z It might be rich in nitrogen and oxygen, like on Earth, or more akin to the toxic stew of carbon dioxide and sulfuric acid on Venus. Webb Telescope Will Look for Signs of Life Way Out There 2022-07-02T04:00:00Z Acid rain is corrosive rain caused by rainwater falling to the ground through sulfur dioxide gas, turning it into weak sulfuric acid, which causes damage to aquatic ecosystems. Environmental Biology 2018-09-06T00:00:00Z When solid sodium chloride is added to aqueous sulfuric acid, hydrogen chloride gas and aqueous sodium sulfate are produced. Chemistry 2019-02-14T00:00:00Z However, much of those barrels are considered sour, or having a higher sulfuric content, putting them in direct competition with Mars sour, the key offshore U.S. oil grade. Mars Sour discount at widest in two years as U.S. reserves hit market 2022-06-10T04:00:00Z While, generally speaking, most alliums are interchangeable in a pinch, leeks are among the mildest in terms of that signature sulfuric flavor and have an almost herbaceous sweetness that sets them apart. How to clean leeks and do more with the versatile allium 2022-04-01T04:00:00Z The planet’s average temperature hovers around 860 degrees Fahrenheit, and thick clouds of sulfuric acid obscure the view. Venus Shows Its Hot, Cloudy Side 2022-02-25T05:00:00Z Acid rain is a term referring to a mixture of wet and dry deposition from the atmosphere containing higher than normal amounts of nitric and sulfuric acids. Environmental Biology 2018-09-06T00:00:00Z For example, the usual method of preparing hydrogen fluoride is by heating a mixture of calcium fluoride, CaF2, and concentrated sulfuric acid: Chemistry 2019-02-14T00:00:00Z An investigation found the 60-year-old line deteriorated from sulfuric acid buildup and may have been strained by record-setting rainfall that swept across California in December. L.A. River sewage spill forces beach closures in Long Beach 2022-02-01T05:00:00Z As the sulfuric cloud above Tonga began to dissipate this week, the nation’s fortunes did appear to brighten. ‘Major disaster’: Tonga faces weeks cut off as volcanic activity imperils operation to repair fiber-optic cable 2022-01-19T05:00:00Z The 60-year-old line had deteriorated due to a buildup of sulfuric acid and might have been strained by the series of storms that hit the region last week. Several Southern California beaches reopen after massive sewage spill 2022-01-04T05:00:00Z Officials at the sanitation agency said the 4-foot-wide concrete sewer pipe had deteriorated because of a buildup of sulfuric acid, a natural byproduct of organic material breaking down within the closed systems. Sewer line in Carson that failed, forcing beach closures in two counties, was near replacement 2022-01-02T05:00:00Z The reaction of concentrated sulfuric acid with a chloride salt produces hydrogen chloride both commercially and in the laboratory. Chemistry 2019-02-14T00:00:00Z Then the soil slurry is fed into a coal-fired facility that uses high-pressure blasts of sulfuric acid at high temperature to extract nickel and cobalt. Can a Tiny Territory in the South Pacific Power Tesla’s Ambitions? 2021-12-30T05:00:00Z The most pressing threat, he said, is that “the batteries break and ooze liquid that includes sulfuric acid and leaks into the soil and then the water aquifer.” Gaza’s old battery pileups pose risk to health, environment 2021-12-21T05:00:00Z In response, Cronin has remarked that Benner’s samples pose a particular challenge, as they are immersed in sulfuric acid—which decomposes organic molecules and thus lowers their detectable organic complexity. Life Is Complicated—Literally, Astrobiologists Say 2021-11-23T05:00:00Z Of course, most of them are very toxic — but there’s lye, cyanide, hydrochloric acid, sulfuric acid. How drug overdose deaths surpassed 100,000 in a year for the first time during COVID-19 2021-11-18T05:00:00Z Hydrogen bromide and hydrogen iodide cannot be prepared using sulfuric acid because this acid is an oxidizing agent capable of oxidizing both bromide and iodide. Chemistry 2019-02-14T00:00:00Z Last October, Somali authorities intercepted 79 tons of sulfuric acid, an ingredient in roadside bombs. A C.I.A. Fighter, a Somali Bomb Maker, and a Faltering Shadow War 2021-10-24T04:00:00Z But aside from the potential unintended climatic and ecological consequences of seeding the stratosphere with sulfuric acid droplets, I can’t help but wonder how such a project would fare given the current political climate. Opinion | How Best to Save the Planet 2021-10-16T04:00:00Z The smaller boat’s first barge was empty but the second leaked sulfuric acid vapors. NTSB: Broadcasting only boat size led to fatal towboat crash 2021-09-25T04:00:00Z Up to 5,800 tons of sulfuric acid would be used daily to leach lithium from the earth dug out of a 300-foot deep mine pit. California's electric car revolution, designed to save the planet, also unleashes a toll on it 2021-07-21T04:00:00Z Pure sulfuric acid is a colorless, oily liquid that freezes at 10.5 °C. It fumes when heated because the acid decomposes to water and sulfur trioxide. Chemistry 2019-02-14T00:00:00Z The team looked into the matter following September’s surprise announcement by others that strange, tiny organisms could be lurking in the thick, sulfuric acid-filled clouds of Venus. Study nixes life in clouds of Venus, but maybe in Jupiter’s? 2021-06-28T04:00:00Z Another area on the site was used as a landfill for polycyclic aromatic hydrocarbons, sulfuric acid, soda ash, wool oil, plasticizers, and pesticides. Below aging U.S. dams, a potential toxic calamity 2021-06-12T04:00:00Z They can also release hazardous cargo such as the 6,000 pounds of sulfuric acid that went into the sea when the Maersk Shanghai lost containers off of the North Carolina coast in 2018. 3,000 shipping containers fell into the Pacific Ocean last winter 2021-06-03T04:00:00Z Its cloud layers are packed with sulfuric acid—enough to chew through skin, bone and metal in moments. Is NASA about to Lift the ‘Venus Curse?’ 2021-06-02T04:00:00Z Oxygen in the air oxidizes it slowly to the more stable sulfuric acid: Chemistry 2019-02-14T00:00:00Z It also purchased sodium hydroxide pellets and sulfuric acid which are intended to be used to generate the deadly gas. Senate Republicans expected to defeat Capitol attack commission bill – live 2021-05-28T04:00:00Z In February, an upset at the refinery showered oil on people’s homes, gardens and drinking-water supplies more than two miles away, and last month sulfuric gases escaped from the plant. After another leak, EPA probes whether St. Croix refinery poses ‘an imminent risk to people’s health’ 2021-05-06T04:00:00Z The company would dig the ore out of a 1,000-acre, 400-foot-deep open pit and concentrate the lithium on site in vats of sulfuric acid. A showdown in Nevada could determine the future of electric vehicles in the U.S. 2021-03-16T04:00:00Z They will mimic his sulfuric rhetoric and, if nominated, many will lose in November. Opinion | Now begins McConnell’s project to shrink Trump’s GOP influence 2021-02-14T05:00:00Z Perchloric acid, HClO4, forms when treating a perchlorate, such as potassium perchlorate, with sulfuric acid under reduced pressure. Chemistry 2019-02-14T00:00:00Z But “they never forget anything that has a sulfuric smell of duplicity.” Editorial Roundup: New England 2020-12-04T05:00:00Z Schulze-Makuch says that for microbes to flourish in Venus’s clouds, where sulfuric acid is abundant and water is scarce, they would have to be adapted to endure conditions beyond those encountered by Earth’s microorganisms. Is There Life on Venus? These Missions Could Find It 2020-09-23T04:00:00Z In a paper published in August, Dr. Seager and her colleagues suggested that microbes borne aloft on air currents called gravity waves could live, metabolize and reproduce inside droplets of sulfuric acid and water. Life on Venus? Astronomers See a Signal in Its Clouds 2020-09-14T04:00:00Z They didn’t find much — just small traces in the swirling mix of sulfuric acid clouds that surround the planet. Discovery of noxious gas on Venus could be a sign of life 2020-09-14T04:00:00Z For example, sulfuric acid, a strong acid, ionizes as follows: Chemistry 2019-02-14T00:00:00Z Swathed in sulfuric acid clouds and possessing oppressive surface pressures and temperatures hot enough to melt lead, Venus is a hellish world. Venus Might Host Life, New Discovery Suggests 2020-09-14T04:00:00Z Wilson and her colleagues sprayed the mine’s ultramafic rock tailings with dilute sulfuric acid, causing magnesium to leach out. Industrial waste can turn planet-warming carbon dioxide into stone 2020-09-03T04:00:00Z Venus, named after the Roman goddess of beauty, roasts at temperatures of hundreds of degrees and is cloaked by clouds that contain droplets of corrosive sulfuric acid. Life on Venus? Astronomers See a Signal in Its Clouds 2020-09-14T04:00:00Z Heavy clouds swirling around the planet are made of droplets of sulfuric acid that are so acidic, we can’t even measure them on our own pH scale. Discovery of noxious gas on Venus could be a sign of life 2020-09-14T04:00:00Z If we assume that the acidity of the rain is due to the presence of sulfuric acid, what was the concentration of sulfuric acid in this sample of rain? Chemistry 2019-02-14T00:00:00Z If not for the sulfuric acid clouds, one might call this layer “hospitable.” Venus Might Host Life, New Discovery Suggests 2020-09-14T04:00:00Z By that time, factories had been mass-producing sulfuric acid, alum and a host of other chemicals for decades. Can the history of pollution shape a better future? 2020-08-30T04:00:00Z Trump’s immediate predecessors, Barack Obama and George Bush, were alike in the gift for surviving amid the sulfuric acid by seeming impervious to it. Trump goes back to basics 2020-07-07T04:00:00Z They don’t have mass protests in the streets, people threatening each other with murder over wearing corona masks or a political climate as noxious as sulfuric acid. Independence or nah? 2020-07-02T04:00:00Z At higher temperatures, boron reacts with all nonmetals, except tellurium and the noble gases, and with nearly all metals; it oxidizes to B2O3 when heated with concentrated nitric or sulfuric acid. Chemistry 2019-02-14T00:00:00Z By 1846, however, they had regrouped and were using a more effective substance, sulfuric ether, at the suggestion of chemist Charles T. Jackson. Surgical anesthesia emerged from self-experimentation and dueling egos 2020-03-12T04:00:00Z On Tuesday night, Defense Secretary Delfin Lorenzana warned against breaking the Coast Guard cordon and recommended that the island, with its sulfuric sludge, be declared a “no man’s land.” Taal Volcano Eases, but Philippines Worries Worst Is to Come 2020-01-15T05:00:00Z Every politician would like to have the ability to switch the narrative, but not every politician can or will endure the sulfuric blowback that might be needed. Trump goes back to basics 2020-07-07T04:00:00Z Other students said they planned to make smoke bombs that would cause less bodily harm, but whose sulfuric odors would also deter police advances. Inside Hong Kong’s Battle-Ready Campuses 2019-11-15T05:00:00Z The amount of sulfuric acid used in industry exceeds that of any other manufactured compound. Chemistry 2019-02-14T00:00:00Z The model and TV personality, 35, posted the never-before-seen image of her severely burned face and neck moments after Stefan Sylvestre, who was hired by her ex-boyfriend, hurled sulfuric acid on her. Katie Piper shares graphic image of infamous acid attack on World Mental Health Day 2019-10-10T04:00:00Z But what defines it is its overpowering sulfuric smell. Newsletter: Today: SoCal's Seismic Calm Is Over 2019-07-05T04:00:00Z It received mixed results for its “sulfuric smell” and unpredictable bubbles. This panel taste-tested 13 hard seltzers so you don’t have to 2019-07-09T04:00:00Z More than a billion years ago, when microscopic green and purple algae flourished in vast sulfuric seas, a day on Earth lasted 18 hours and the moon was 24,000 miles closer. Our moon — partner, protector, benefactor 2019-06-18T04:00:00Z The strong affinity of concentrated sulfuric acid for water makes it a good dehydrating agent. Chemistry 2019-02-14T00:00:00Z Dark warehouses full of flooded fertilizer reeked with a sulfuric stench that made it painful to inhale. Paralysis on America’s Rivers: There’s Too Much Water 2019-06-10T04:00:00Z A raging fire at a zinc production plant in North Carolina forced the evacuations of residents and firefighters Monday after sulfuric acid began spewing into the atmosphere. North Carolina zinc plant fire forces evacuations as sulfuric acid released into the air 2019-04-29T04:00:00Z Deputies went door-to-door warning people to evacuate as the burning plant released sulfuric acid into the air, and the county says about a half-mile area has been evacuated. People flee airborne acid as North Carolina zinc plant burns 2019-04-29T04:00:00Z “In reality, we were mostly talking about sulfuric acid on Mars,” recalled Dr. Squyres. NASA’s Mars Rover Opportunity Concludes a 15-Year Mission 2019-02-13T05:00:00Z Hot, concentrated sulfuric acid is an oxidizing agent. Chemistry 2019-02-14T00:00:00Z The vast but untapped reserves of buried copper, nickel and precious metals in northeastern Minnesota are locked up in sulfide minerals that can leach sulfuric acid and other pollutants when exposed to air and water. Minnesota OKs final major state permits for PolyMet mine 2018-12-20T05:00:00Z For instance, she made a series of photo-text works that document the process of submerging metal plates in trays of sulfuric and nitric acid. Review: The artwork of Adrian Piper makes a stern proclamation: 'Everything will be taken away' - Los Angeles Times 2018-10-13T04:00:00Z Authorities cautioned that sulfuric gas pouring out of the vents also posed dangers, particularly to elderly and people with respiratory problems. Hawaii volcano: five homes destroyed by lava from vents created by Kilauea 2018-05-06T04:00:00Z Authorities cautioned sulfuric gas pouring out of the vents also posed dangers, particularly to elderly and people with respiratory problems. Some calming of Hawaii volcano, but scientists remain wary 2018-05-05T04:00:00Z Write the Lewis structure for sulfuric acid, H2SO4, which has two oxygen atoms and two OH groups bonded to the sulfur. Chemistry 2019-02-14T00:00:00Z He says there was some sort of “chemical-making process” inside the room that apparently created sulfuric acid. 2 women dead in Fresno motel room; toxic fumes suspected 2018-05-04T04:00:00Z The Palace of Westminster, with its cinematic Big Ben clock, set beside the River Thames, is a survivor — of epic fire, German bombs, sulfuric smog and bad plumbing. Westminster, home of British democracy, is rotting from within 2018-04-25T04:00:00Z Their grisly trajectory from exuberant would-be filmmakers to rendered remains in vats of sulfuric acid has exposed as hollow the vows of politicians, police chiefs and generals to fix the problem. In echo of Parkland shooting outrage, anger rises in Mexico after film students were killed and dissolved in acid 2018-04-24T04:00:00Z They then took them to another house, where prosecutors found jugs and tubs of sulfuric acid. 3 murdered Mexican film students caught in gang turf battle 2018-04-24T04:00:00Z Many important chemical products are prepared via industrial processes that use heterogeneous catalysts, including ammonia, nitric acid, sulfuric acid, and methanol. Chemistry 2019-02-14T00:00:00Z The then 15-year-old victim was among four children burned after a bottle of liquid drain cleaner containing sulfuric acid broke open after he threw it. Man serving life for acid burning of Texas teen loses appeal 2018-04-10T04:00:00Z Hidden in its bowels is a labyrinthine system of caves, filled with hot sulfuric vapors. Prehistoric Wine Discovered in Inaccessible Caves Forces a Rethink of Ancient Sicilian Culture 2018-02-13T05:00:00Z The three were beaten and tortured before being killed, and their bodies were later dissolved in sulfuric acid, said authorities, who cited genetic evidence gathered at various scenes associated with the crime. In echo of Parkland shooting outrage, anger rises in Mexico after film students were killed and dissolved in acid 2018-04-24T04:00:00Z The sulfur and oxygen mix with natural underground water flows to create sulfuric acid. Robots could descend into old mines to prevent toxic spills 2018-01-31T05:00:00Z The formation and subsequent ionization of sulfuric acid are shown here: Chemistry 2019-02-14T00:00:00Z Those minimal exhaust fumes had to go through a scrubber that used sodium chlorite, sodium hydroxide, sulfuric acid, sodium sulfide, three mixers, three pumps, a lot of water, and a great big blower. Fear of the Federal Government in the Ranchlands of Oregon 2018-01-18T05:00:00Z Because the universe is constructed to inflict maximum pain upon Washington Capitals fans, Monday night provided a hearty squeeze of sulfuric acid right in the eyeball. Perspective | Filip Forsberg helps lift the Predators to the Stanley Cup final. You mad, Caps fans? 2017-05-23T04:00:00Z The technology driving modern car batteries, produced dirt-cheap from toxic concoctions of sulfuric acid and lead, was invented in the 1800s. Lithium: Mineral found in Nevada could power our future 2017-03-31T04:00:00Z The canal is wide open, a stinking river of sewage belching methane and sulfuric acid. Mexico City is a parched and sinking capital 2017-02-18T05:00:00Z One commercial method of preparing orthophosphoric acid is to treat calcium phosphate rock with concentrated sulfuric acid: Chemistry 2019-02-14T00:00:00Z At that time, the water level in the pit, contaminated with copper, arsenic, zinc, cadmium, and sulfuric acid, was around 5,100 feet above sea level. Montana Editorial Roundup 2016-12-14T05:00:00Z Once it goes airborne, the ammonia interacts with sulfuric acid and water, forming particles that become the nuclei around which water condenses, giving birth to clouds. How bird poop helps cool the Arctic 2016-11-15T05:00:00Z Crude oil found at cooler temperatures, even deep down, often bears the sulfuric detritus left by busy microbes. Deep-sea drilling expedition to look for life's limits in scalding environments 2016-09-07T04:00:00Z The scent was sulfuric, like rotten eggs being toasted over a campfire. Sounders fall to rival Timbers, 3-1 2016-07-17T04:00:00Z The only definitely known halous acid is chlorous acid, HClO2, obtained by the reaction of barium chlorite with dilute sulfuric acid: Chemistry 2019-02-14T00:00:00Z Smoke billows from the chimney of the small battery smelter, carrying particles of lead, plastic, and sulfuric acid into the air. The Toxic Toll of Indonesia's Battery Recyclers 2016-05-31T04:00:00Z It is thought that sulfuric acid is essential to initiate most particle formation in the atmosphere3, 4, and that ions have a relatively minor role5. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z They break up the mustard-yellow slabs of sulfur that are formed by planting pipes into the crater, forcing sulfuric gases to condense and then solidify. Indonesian sulfur miners brave volcano, fumes, earn pennies 2016-05-03T04:00:00Z That sulfuric odor of broccoli was likely evolved to ward off some animals that might eat its flowers. Why Do Some Fruits and Vegetables Have Such Strong Smells? 2016-04-25T04:00:00Z It is possible to obtain the lighter halic acids from their barium salts by reaction with dilute sulfuric acid. Chemistry 2019-02-14T00:00:00Z Jindal moves effortlessly between cornball jokes — “my wife was my high school sweetheart, but I wasn’t hers” — and sulfuric attacks on the “establishment.” Inching up in Iowa, Bobby Jindal leaves no room on his right 2015-10-17T04:00:00Z Some laboratory studies, however, have reported organic particle formation without the intentional addition of sulfuric acid, although contamination could not be excluded6, 7. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z Because sulfuric acid is used in the process, much of the waste contains high levels of acid. Feds reach nearly $2B settlement in hazardous waste lawsuit with fertilizer maker Mosaic 2015-10-01T04:00:00Z The Justice Department accused the plants of spewing illegal levels of nitrogen oxide, sulfur dioxide and sulfuric acid mist. Guardian Industries Settles Allegations It Violated Clean Air Act 2015-09-29T04:00:00Z Which is a stronger acid, sulfurous acid or sulfuric acid? Chemistry 2019-02-14T00:00:00Z The 16 candidates are assembled; the one that emits the most sulfuric scent is chosen to run for office. So, 16 Republican candidates walk into a presidential nomination contest ... 2015-07-21T04:00:00Z Here we present evidence for the formation of aerosol particles from highly oxidized biogenic vapours in the absence of sulfuric acid in a large chamber under atmospheric conditions. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z Harvard’s Keith leads a team that wants to conduct an albedo experiment that involves releasing roughly one half kilogram of sulfuric acid particles into the stratosphere to study its effects on ozone. U.S. should fund climate engineering research, report concludes 2015-02-10T05:00:00Z The Elisa Fountain in the center of town bubbles up with sulfuric mineral water, which the locals drink with enthusiasm for its healing qualities. Charlemagne lives — and thrives — in modern Aachen 2014-12-18T05:00:00Z Explain why sulfuric acid, H2SO4, which is a covalent molecule, dissolves in water and produces a solution that contains ions. Chemistry 2019-02-14T00:00:00Z These particles include sulfates—variations on the chemical sulfuric acid—that then spread out through the lower atmosphere and hang around for several years. Can Geoengineering Save the Earth? Ion-induced nucleation of pure organic particles constitutes a potentially widespread source of aerosol particles in terrestrial environments with low sulfuric acid pollution. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z The gas quickly formed tiny droplets of sulfuric acid, which acted like minuscule mirrors and reflected some of the sun’s rays back into space. Climate Tools Seek to Bend Nature’s Path 2014-11-09T05:00:00Z Fuqua goes out of his way to stage these scenes as reenactments of Edward Hopper’s “Nighthawks,” right down to the sulfuric green-and-yellow color scheme. ‘The Equalizer’ movie review: Denzel Washington won’t go quickly or quietly In June, Mississippi Phosphates Corp. representatives told Cherokee residents they would install $17,000 worth of sulfuric acid monitors in the neighborhood. Pascagoula residents press pollution concerns 2014-08-19T04:00:00Z Medieval alchemists called sulfuric acid “the oil of vitriol.” India Ink: The Girl Without a Face 2013-08-02T14:06:26Z It is thought that aerosol particles rarely form in the atmosphere without sulfuric acid3, 4, except in certain coastal regions where iodine oxides are involved8. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z One geoengineering approach would mimic this kind of volcanic action by spraying sulfuric acid droplets into the stratosphere. Climate Tools Seek to Bend Nature’s Path 2014-11-09T05:00:00Z For example, element 85 precipitates as a sulfide and is precipitated by zinc in sulfuric acid, both of which are reactions that are characteristic of a metal rather than a nonmetal such as iodine. A Tale of 7 Elements: Element 85 Astatine [Excerpt] 2013-07-05T14:15:00.623Z “In fact, what Opportunity has mostly discovered evidence for in the past was sulfuric acid on Mars,” Dr. Squyres said. Martian Rock Another Clue to a Once Water-Rich Planet 2013-06-07T23:42:03Z One night he was working with a lead-acid battery when he spilled sulfuric acid onto the floor. Bryce Harper: A 20-year-old for the ages? 2013-05-12T00:46:21Z Recently, however, it has been shown that oxidized organic compounds do indeed help to stabilize sulfuric acid clusters and probably play a major role in atmospheric particle nucleation6, 14, 15. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z There, the sulfur dioxide rapidly combined with readily available hydroxide gas—which, in liquid form, is commonly known as hydrogen peroxide—to form more than 100 million tons of sulfuric acid. Tambora Erupts in 1815 and Changes World History [Excerpt] 2013-03-01T18:45:00.280Z Twice a week, the batteries had to be filled with sulfuric acid, which was carried around in buckets. DealBook: Wall Street's Race to the 48-Millisecond Trade 2012-08-15T16:40:19Z The rest is an array of chemicals, such as toluene, hydrocyanide, ammonia, sulfuric acid and ethylbenzene, that can have respiratory or neurological effects. Pollution Poverty and People of Color: Living with Industry 2012-06-04T15:45:07.133Z When it rained in Jerome, it rained sulfuric acid: the trees that hadn’t been cut for fuel and building material died in the acid rain. Oceans of Ore: How an Undersea Caldera Eruption Created Jerome, Arizona 2012-06-04T11:15:12.460Z In contrast with other works that have reported organic particle formation without intentional addition of sulfuric acid6, 7, here we measure the cluster chemistry and the role of ions, and rule out contamination. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z The sulfuric acid condensed into minute droplets—each two hundred times finer than the width of a human hair—that could easily remain suspended in the air as an aerosol cloud. Tambora Erupts in 1815 and Changes World History [Excerpt] 2013-03-01T18:45:00.280Z Cyrus Hester, who works for the tribe’s Natural Resources Department, raised the possibility that sulfuric acid might contaminate the groundwater and harm fish populations in the area’s rivers and streams. How Did Wisconsin Become the Most Politically Divisive Place in America? 2012-05-24T17:25:25Z General Chemicals West also is a major source of emissions, including more than a ton of sulfuric acid, a chemical that can trigger respiratory problems, in 2010. Pollution Poverty and People of Color: Living with Industry 2012-06-04T15:45:07.133Z Both Spirit and Opportunity have discovered evidence of liquid water, albeit water that is highly acidic, like sulfuric acid, that made parts of ancient Mars potentially habitable, at least intermittently. Mars Rover?s Discovery Excites NASA Scientists 2011-09-02T02:13:25Z The first, which is more important in polluted environments, involves nucleation of sulfuric acid and water together with a combination of amines or ammonia with oxidized organics, and has a strong dependence on sulfuric acid. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z For several decades, beginning in the 1970s, Bohlmann defaced more than 50 paintings at public exhibitions, often with sulfuric acid, including works by Rembrandt, Rubens and Dürer, inflicting about $180.3 million in damage. Museums? fine art of protecting masterpieces 2011-08-15T23:59:16Z If that SO2 makes it to the stratosphere—the middle layer of the atmosphere 10 kilometers up—it forms droplets of diluted sulfuric acid, known as aerosols. Stratospheric Pollution Helps Slow Global Warming 2011-07-22T10:15:00.220Z But some toxic chemical releases, including benzene, lead, 1,3-butadiene, tetrachloroethylene and sulfuric acid, rose above the 2004 levels in almost every year since then. Pollution Poverty and People of Color: Living with Industry 2012-06-04T15:45:07.133Z Both methyl chloride, which can be used to make rubber, and oleum, a type of sulfuric acid, were accidentally released into the atmosphere. U.S. report faults DuPont in worker's 2010 death 2011-07-07T16:48:39Z Nevertheless, our results may provide fresh insights into several seemingly disparate phenomena associated with low atmospheric concentrations of sulfuric acid. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z Dr. Grinspoon has theorized that Venus, whose spectacular volcanism boiled off all its surface water long ago, nevertheless harbored liquid moisture in the noxious clouds of sulfuric acid that cloak the planet. Fountains of Optimism for Life Way Out There 2011-05-09T22:13:41Z When I took chemistry in college, we students could pour the hydrochloric or even sulfuric acid with impunity. Killer Entertainment 2011-04-06T12:15:00.267Z McNabb returns to Philadelphia this week to face Michael Vick, who is now at the dizzying top of that roller coaster that McNabb knows will soon plunge into a sulfuric chasm of despair. Week 4 N.F.L. Matchups 2010-10-01T11:30:00Z A burn surgeon who operated on Storro said the substance thrown on her face was an acid as strong as hydrochloric or sulfuric acid. Police Say Wash. Acid Attack Self-Inflicted 2010-09-17T00:49:00Z The stabilizing agent for pure biogenic particles is a suitable ion, whereas for sulfuric acid particles the stabilizing agents are amines, or ammonia with oxidized organics. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z The sulfur in oil reacts to form sulfuric acid. More on the 3,000-Mile Oil Change 2010-09-16T17:05:00Z While the data are tentative and subject to change, these officials said, Honeywell's experts increasingly suspect that some of the ash plumes contained dense sulfuric clouds capable of causing significant problems for jet-turbine engines. Plane Makers Struggle to Set Ash Standards 2010-07-23T00:18:00Z Some consider this smelly sulfuric beast, which erupted about four years ago, an attraction of sorts. One Steamy Morning 2010-06-04T00:16:00Z Emissions of sulfur dioxide from power plants, it turned out, tend to combine with water downwind and produce flora- and wildlife-destroying sulfuric acid. Magazine Preview: Climate Change - Building a Green Economy 2010-04-07T17:00:00Z It varies with temperature, chemical species, charge and vapour concentrations, and may even be absent when evaporation rates are highly suppressed, such as for sulfuric acid–dimethylamine clusters10, 37. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z Environmentalists say the mill's discharge contained dioxin and sulfuric compounds that threatened hundreds of species of wildlife. 2010-01-29T14:47:00Z Greenpeace's Mr. Vazhenkov disputed that, saying the mill's waste for years has exceeded legally established limits on concentrations of hazardous dioxin and sulfuric compounds. 2010-01-20T00:27:00Z To the other portion add a few drops of 1 to 5 sulfuric acid and shake the test tube. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. Whether the analogy should be pursued even further remained doubtful, although some suspicion lingered on for a while that phosphoric acid might actually be a modified sulfuric acid. History of Phosphorus The sticking probability for collisions where at least one particle is mainly sulfuric acid is similarly defined as: Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z Similarly, spongy platinum accelerates the oxidation of sulfur dioxide to sulfur trioxide, in the commercial manufacture of sulfuric acid. The Chemistry of Plant Life "Acid—sulfuric—fumes!" het turned quickly to the spectro-analyzer; the lines of oxygen and nitrogen were merged with others, and that meant an atmosphere unfit for human lungs! Astounding Stories, August, 1931 The difference between the number of cubic centimeters of N/4 sulfuric acid and N/4 caustic soda gives the amount of alkali in the sample. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. Treatment with sulfuric acid decomposed these materials into a solid residue and dissolved phosphoric acid. History of Phosphorus The same Hamaker constant is used for both sulfuric acid and HOMs because it does not noticeably change the model predictions. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z Concentrated nitric acid, or better, a mixture of concentrated nitric and sulfuric acids, acts upon cellulose, converting it into various nitro-derivatives, several of which have great industrial value. The Chemistry of Plant Life A variety of smaller plants were also built for the production of such items as caustic soda, sulfuric acid, rubber products, electrical equipment and light bulbs, footwear, and vegetable oils. Area Handbook for Albania As an example, say we first used 7.7 c. c. of N/4 sulfuric acid to just discharge the pink, then added 4 c. c. more, or 11.7 c. c. in total. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. This idea was not entirely new; since 1832, a production of a “superphosphate” from bones and sulfuric acid had been in progress at Prague. History of Phosphorus The ions are guided into the sample flow with an electric field, where they react with sulfuric acid and HOMs. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z Put a drop of concentrated nitric or sulfuric acid on a piece of colored wool cloth, or on a piece of colored silk. Common Science This mixed with nitric and sulfuric acids gives nitroglycerin, an easy thing to make, though I should not advise anybody to try making it unless he has his life insured. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries The calculated amount of sulfuric acid to decompose the lime "rock" is then added, and the mass agitated until the fatty acids contained therein are entirely set free. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. Ministering angels, he felt convinced, do not rub red pepper and sulfuric acid into the wounds of suffering mortals. The Hill of Dreams The calibration coefficient, C, is the same as that obtained for sulfuric acid because HOMs and sulfuric acid were shown to have similar molecular collision rates with the nitrate ions16. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z The sulfuric and nitric acids must be measured in glass or china cups, and the hydrochloric acid must be measured in a silver-plated spoon or in glass—not in tin. Common Science If this is treated with nitric and sulfuric acids we get from it picric acid, a yellow crystalline solid. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries The glycerine water contains 12 per cent. to 25 per cent. glycerine and contains manganese sulfate, sulfuric acid and albuminous matter. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. These projects involve items such as gunpowder, acetylene, hydrogen, lead, mercury, sulfuric acid, nitric acid, cadmium, potassium sulfate, potassium cyanide, potassium ferrocyanide, copper sulfate, and hydrochloric acid. The Boy Mechanic: Volume 1 700 Things for Boys to Do Furthermore, the binding of with highly oxidized HOMs is found in the present study to be strong, so clustering should proceed at near the kinetic limit, as it does for with sulfuric acid. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z Hot sulfuric water, which contains radium, bubbles up in all parts of Pöstyén, and even the bed of the cold river is full of steaming hot mud. Seeing Europe with Famous Authors, Volume 6 Germany, Austria-Hungary and Switzerland, part 2 But if the phosphate is treated with sulfuric acid it becomes more soluble and this product is sold as "superphosphate." Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries This is made by the action of concentrated sulfuric acid upon a solution of oleic acid or stearic acid in an aromatic hydrocarbon. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. Always use 98 to 100 per cent pure potassium cyanide and a good grade of commercial sulfuric acid. Manual of Gardening (Second Edition) The water contained in this hollow is impregnated with a solution of different saline substances, having lime, magnesia, and soda for their base, partially neutralized with muriatic and sulfuric acid. Palestine or the Holy Land From the Earliest Period to the Present Time It is also sulfuric and the ground about it is woody, low, marshy and consequently aguish. After Waterloo: Reminiscences of European Travel 1815-1819 The sulfuric acid is made mostly from iron pyrite and this we have been content to import, over 800,000 tons of it a year, largely from Spain, although we have an abundance at home. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries As greases and tallow often contain impurities a preliminary treatment with sulfuric acid is necessary. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. The chemicals are always combined in the following proportion: Potassium cyanide, 1 oz.; sulfuric acid, 2 fluid oz.; water, 4 fluid oz. Manual of Gardening (Second Edition) Or the ton of raw phosphate may be mixed with a ton of sulfuric acid in the fertilizer factory, and the two tons of acid phosphate may be sold to the same farmer for $32. The Farm That Won't Wear Out An oily looking liquid, sulfuric acid, an excessively powerful agent, will set it at liberty. The Life of the fly; with which are interspersed some chapters of autobiography It is rustproof and is not attacked by sulfuric, nitric or acetic acid, hot or cold, diluted or concentrated. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries There are also other means of saponification, as, the hydrolysis of an oil or fat by the action of hydrochloric or sulfuric acid, by autoclave and by ferments or enzymes. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. Always use an earthen dish, pour in the water first, and add the sulfuric acid to it. Manual of Gardening (Second Edition) The contents are vigorously stirred, and 450 g. of sulfuric acid, diluted with 115 g. of water, are introduced during the course of seven to eight hours. Organic Syntheses Above all, we will run no risks, perhaps of blinding ourselves; for it is once more a question of heating manganese dioxide with sulfuric acid. The Life of the fly; with which are interspersed some chapters of autobiography The first step in the process is to digest the sawdust or chips with dilute sulfuric acid under heat and pressure. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries To the filtrate from the insoluble matter add 40 cubic centimeters of half normal sulfuric acid, all the acid being added at once. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. Stirring is started, and 4160 cc. of commercial concentrated sulfuric acid is run in at such a rate that the temperature of the mixture never rises above about 10'0. Organic Syntheses It is much more convenient in the laboratory, however, to use sulfuric acid in place of hydrochloric acid; in fact, the yields obtained are better than those recorded in the literature. Organic Syntheses In the 5-l. flask are placed about 2 l. of the sulfuric acid-acetone reaction mixture, and the flask is then heated with a free flame and shaken occasionally. Organic Syntheses In the chapter on explosives I explained how cellulose treated with nitric acid in the presence of sulfuric acid was nitrated. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries The oily layer is again warmed with sulfuric acid, as before. Organic Syntheses The acid and oily filtrates from the two sulfuric acid treatments are steam distilled, and the distillate combined with the next batch of material. Organic Syntheses Concentrated hydrochloric acid is introduced into concentrated sulfuric acid, by means of a dropping funnel and a capillary tube leading to the bottom of the sulfuric acid container. Organic Syntheses If this precaution is not employed, the time for the addition of the sulfuric acid is greatly increased, provided the temperature of the reaction mixture is still kept within the limits mentioned. Organic Syntheses Tissue paper, that is, cellulose, is treated with nitric acid in the presence of sulfuric acid. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries If a cork is used for the steam distillation of the reaction mixture of acetone and sulfuric acid, it should be coated well with pitch and wired into the flask. Organic Syntheses The mechanism of the reaction is undoubtedly as follows: when the sulfuric acid and acetone are in contact for long periods of time, several molecules of the acetone condense to form aldol condensation products. Organic Syntheses The gas is dried by passing through a wash-bottle containing concentrated sulfuric acid. Organic Syntheses The heat of dilution of the sulfuric acid will cause the nitrotoluene to melt, and rapid oxidation will soon take place. Organic Syntheses The replacement of sulfuric acid by hydrochloric has done away with that danger and the glucose now produced is pure. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries The last half of the sulfuric acid must be added gradually, in order to prevent too violent a reaction. Organic Syntheses After the sulfuric acid has been added and the spontaneous heating of the reaction mixture has subsided, the mixture is heated to gentle boiling for about half an hour. Organic Syntheses About 6 kg. of concentrated hydrochloric acid and 10 kg. of concentrated sulfuric acid are required in one run. Organic Syntheses The filtrate, which should be light yellow or greenish in color, is acidified with dilute sulfuric acid, with stirring. Organic Syntheses These are formed by the action of sulfuric acid on coconut, castor, cottonseed or mineral oils. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries It is usually preferable to run the alkaline solution into the dilute sulfuric acid, rather than to use the reverse procedure, for the precipitation of the nitro acid. Organic Syntheses Notes The above procedure differs from that recorded in the literature, mainly in the use of a fairly large excess of sulfuric acid. Organic Syntheses The generating flask will have to be recharged every six hours; it should be half filled with sulfuric acid. Organic Syntheses Because of the use of this large excess of sulfuric acid, the reaction is apt to be rather violent if the directions given are not carefully followed. Organic Syntheses Acetone, which is also made from acetylene, can be converted directly into rubber by fuming sulfuric acid. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries The washing of the crude reaction product with dilute sulfuric acid is advisable, if good material is to be obtained. Organic Syntheses After all of the sulfuric acid has been added, the solution should react acid to Congo paper. Organic Syntheses Two kilograms of concentrated sulfuric acid and 750 g. of concentrated hydrochloric acid are sufficient to produce the necessary amount of hydrogen chloride. Organic Syntheses A sample of this partially dried product, on drying in vacuo over sulfuric acid for twenty hours, loses about 10 per cent of its weight and the melting point is 106'0. Organic Syntheses Notes It is very necessary to keep the temperature near 0'0 while adding the sulfuric acid, or a tarry product will be obtained. Organic Syntheses Vigorous stirring and the addition of the sulfuric acid at the proper rate are essential for a good product. Organic Syntheses One hundred grams of benzyl cyanide are added to a mixture containing 100 cc. of water, 100 cc. of concentrated sulfuric acid, and 100 cc. of glacial acetic acid. Organic Syntheses In order to obtain a pure white hydrazine sulfate as the first precipitate, it is necessary to cool the hydrazine solution thoroughly and filter it twice before the sulfuric acid is added. Organic Syntheses It is important that the materials should be added in the correct order; should the sulfuric acid be added before the ferrous sulfate, the reaction may start at once. Organic Syntheses After the solid is completely dissolved, the solution is cooled to 20'0, 100 g. of concentrated sulfuric acid are slowly poured in, and the mixture is again cooled to 20'0. Organic Syntheses If impure hydroquinone is used, a black, sticky precipitate will usually appear after the addition of the sulfuric acid to the hydroquinone solution. Organic Syntheses A sample of the filtrate should be tested for undecomposed trinitrobenzoic acid: if a precipitate is produced by the addition of sulfuric acid the process must be continued. Organic Syntheses Moreover, the sulfuric acid must be added slowly and with stirring. Organic Syntheses Procedure To 3600 g. of concentrated sulfuric acid, in a 5-l. flask placed in an empty water bath, are added 360 g. of technical trinitrotoluene, while the mixture is stirred mechanically. Organic Syntheses The trinitrobenzoic acid is precipitated from the filtrate by the addition of a slight excess of 50 per cent sulfuric acid. Organic Syntheses |
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