| 单词 | hydrogen fluoride |
| 例句 | Japan's trade ministry said it would lift export curbs to South Korea on some high-tech materials, namely fluorinated polyimides, resists and hydrogen fluoride. Factbox: What Japan, South Korea leaders achieved at first working meeting in 12 years 2023-03-16T04:00:00Z Fire and hazmat officials checked for oxygen, carbon monoxide, hydrogen fluoride and flammable gases and found all within normal ranges, Mauser said. Sickness affecting 48 at charter school still unexplained 2022-11-06T04:00:00Z For example, ammonia, NH3, is a weaker acid than is water, H2O, which is weaker than is hydrogen fluoride, HF. Chemistry 2019-02-14T00:00:00Z He said of particular concern is the hydrogen fluoride in the water, a potent chemical that can cause burns or death at high enough concentrations. 'If there's a spill, it's a disaster': living next to a giant lake of radioactive waste 2019-11-06T05:00:00Z Wisconsin Public Radio reports that residents and tribal leaders expressed frustration over Husky’s plans to continue using the highly toxic chemical hydrogen fluoride as part of its refining process. Wisconsin refinery that was site of explosion plans rebuild 2019-09-30T04:00:00Z In July, Japan imposed export restrictions on materials such as photoresists and hydrogen fluoride, which are crucial to South Korea’s semiconductor and electronic-display industries. Ebola success, Moon bears and gene-therapy delay 2019-08-13T04:00:00Z South Korea sourced 44% of hydrogen fluoride from Japan in the first five months of the year, Korean industry data showed. South Korean firm to boost output of chipmaking chemical amid Japan... 2019-07-23T04:00:00Z 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 South Korean chipmakers rely on Japan for most of the materials affected by the export curbs, although they source some hydrogen fluoride from China and South Korea. Samsung, SK Hynix ask Korean firm to boost chemicals supply amid... 2019-07-16T04:00:00Z The Minnesota Public Radio News reports that Duluth officials will vote Monday on a resolution asking the Environmental Protection Agency to examine hydrogen fluoride usage at the Husky refinery. Duluth pursuing study of toxic chemical after refinery blast 2019-07-15T04:00:00Z Complicating matters are media reports that hydrogen fluoride, one of the materials covered by the export curbs, was shipped to North Korea after being exported to the South. Japan export curbs on South Korea may widen rift over wartime labor... 2019-07-12T04:00:00Z Complicating the matter are Japanese media reports that some quantity of one of the materials covered by the export curbs, hydrogen fluoride, was shipped to North Korea after being exported to the South. South Korea calls for probe as forced labor feud with Japan deepens 2019-07-12T04:00:00Z With the exception of hydrogen fluoride, which has a strong hydrogen-fluoride bond, they are strong acids. Chemistry 2019-02-14T00:00:00Z Stockpiling is not regarded as a viable option for hydrogen fluoride as it is highly toxic. Samsung, SK Hynix ask Korean firm to boost chemicals supply amid... 2019-07-16T04:00:00Z He was responding to reports that South Korea was suspected of shipping Japan’s hydrogen fluoride, a chemical covered by Tokyo’s recent export curbs, to the North. South Korea rejects Japan media reports on transfer of material to... 2019-07-09T04:00:00Z Other exports affected by Tokyo’s decision are what is called “resist,” for making semiconductors, and hydrogen fluoride used for semiconductors, pharmaceuticals and polymers, including nylon and Teflon. Japan cites security concerns in curbing exports to SKorea 2019-07-01T04:00:00Z Starting Thursday, Japanese manufacturers of fluorinated polyimides, which are used in displays and a material called “resist” and hydrogen fluoride, which are used in semiconductors, must apply for approval for sales to South Korea. The Latest: Japan tightens limits on exports to South Korea 2019-07-01T04:00:00Z Because hydrogen fluoride attacks glass, it can frost or etch glass and is used to etch markings on thermometers, burets, and other glassware. Chemistry 2019-02-14T00:00:00Z A SK Hynix official said the company was running a test of some South Korean hydrogen fluoride materials, but did not provide further details. Samsung, SK Hynix ask Korean firm to boost chemicals supply amid... 2019-07-16T04:00:00Z Other exports affected by Tokyo’s decision are what is called “resist” for making semiconductors and hydrogen fluoride used for pharmaceuticals and polymers, including nylon and Teflon. Japan to toughen restrictions on exports to South Korea 2019-06-30T04:00:00Z Company officials told Wisconsin Public Radio on Wednesday that they explored using alternatives to hydrogen fluoride, but that the chemical is fundamental to making gasoline. Company will keep using toxic chemical at Wisconsin refinery 2019-04-03T04:00:00Z Officials were concerned about the presence of hydrogen fluoride at the plant. Evers win, missing girl, soggy summer top Wisconsin news 2018-12-22T05:00:00Z The largest use for hydrogen fluoride is in production of hydrochlorofluorocarbons for refrigerants, in plastics, and in propellants. Chemistry 2019-02-14T00:00:00Z A storage tank filled with highly toxic hydrogen fluoride sits in the same area, just 150 feet away from the cracking unit that exploded. Trump keeps trying to kill agency that investigates chemical plant disasters 2018-09-14T04:00:00Z Husky Energy in Superior is one of about 50 refineries in the country that still uses hydrogen fluoride to process high-octane gasoline. Mayors ask refinery to end use of dangerous chemical 2018-05-02T04:00:00Z While cars, obviously, contain other flammable materials, he was specifically worried that at high temperatures, 1234yf emitted hydrogen fluoride, which is dangerous if inhaled or touched. New climate-friendlier coolant has catch: It’s flammable 2016-10-22T04:00:00Z But the tank containing hydrogen fluoride was not damaged. Evers win, missing girl, soggy summer top Wisconsin news 2018-12-22T05:00:00Z It is necessary to keep the two gases separated to prevent their explosive recombination to reform hydrogen fluoride. Chemistry 2019-02-14T00:00:00Z While cars, obviously, contain other flammable materials, he was specifically worried that at high temperatures 1234yf emitted hydrogen fluoride, which is dangerous if inhaled or touched. New Climate-Friendlier Coolant Has a Catch: It’s Flammable 2016-10-22T04:00:00Z The tank containing hydrogen fluoride was not damaged by the explosion or fire. Mayors ask refinery to end use of dangerous chemical 2018-05-02T04:00:00Z When it burns, it releases corrosive and toxic hydrogen fluoride and the highly toxic gas carbonyl fluoride. How the Chemical Industry Joined the Fight Against Climate Change 2016-10-16T04:00:00Z Currently, the bonds are made using expensive specialized reagents or the highly corrosive gas hydrogen fluoride. The new breed of cutting-edge catalysts 2016-09-05T04:00:00Z The reaction of zinc with hydrogen fluoride is: Chemistry 2019-02-14T00:00:00Z Such an accident nearly happened at an ExxonMobil plant in California, where flying debris narrowly missed a hydrogen fluoride tank, the U.S. Hazardous chemicals post secret threat to Texas neighbors 2016-05-12T04:00:00Z The Organization for the Prohibition of Chemical Weapons said Veolia destroyed the last 75 cylinders containing hydrogen fluoride at a facility in Texas. World Digest: Jan. 5, 2016 2016-01-05T05:00:00Z Because hydrogen fluoride molecules break down at high temperatures, the spectra of warmer stars show less of the gas than those of cooler ones do—even if the warmer stars contain just as much fluorine. How neutrinos saved your teeth from cavities 2015-09-11T04:00:00Z Of the 1,328 metric tons of chemical weapons and precursor chemicals Damascus declared, only 16 metric tons of hydrogen fluoride remain to be destroyed at a plant in Port Arthur, Texas. Syrian chemical weapons waste disposed of, watchdog says 2015-06-17T04:00:00Z Explain why a hydrogen bond between two water molecules is weaker than a hydrogen bond between two hydrogen fluoride molecules. Chemistry 2019-02-14T00:00:00Z If it had, the explosion could have hurled debris, piercing tanks of hydrogen fluoride. Hazardous chemicals post secret threat to Texas neighbors 2016-05-12T04:00:00Z Consumers Energy officials say the improvements also will significantly reduce emissions of sulfur trioxide, hydrogen fluoride, and hydrogen chloride. Consumers Energy makes progress on $250M upgrade 2014-09-10T04:00:00Z The chemicals included hydrogen fluoride and ammonium hydrogen fluoride, which according to Germany's Suddeutsche newspaper were supposed to be used in the production of toothpaste. German chemicals 'not in Syria arms' 2013-09-19T10:25:45Z Both chemicals may ignite when in contact with extremely hot surfaces or engine parts, releasing toxic hydrogen fluoride gas, but the Honeywell coolant can do so at slightly lower temperatures. France deepens dispute over Mercedes sales ban 2013-07-26T14:31:09Z For example, when hydrogen fluoride dissolves in water and ionizes, protons are transferred from hydrogen fluoride molecules to water molecules, yielding hydronium ions and fluoride ions: Chemistry 2019-02-14T00:00:00Z Government investigators survey the impact of a hydrogen fluoride leak. Alert over South Korea toxic leaks 2013-02-06T18:20:49.877Z Readily absorbed by the skin, hydrogen fluoride begins attacking the body once it enters the bloodstream by spreading death on a cellular level, a process known as necrosis. Coolant safety row puts the heat on Europe's carmakers 2012-12-12T10:21:56Z The most common electrolysis procedure is to use a molten mixture of potassium hydrogen fluoride, KHF2, and anhydrous hydrogen fluoride. Chemistry 2019-02-14T00:00:00Z Several workers at the Hube Global chemical plant died in a massive hydrogen fluoride leak. Alert over South Korea toxic leaks 2013-02-06T18:20:49.877Z |
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