| 单词 | bleaching agent |
| 例句 | Composed with everyday leftovers from newspapers to polyester cord, bleaching agents and layered paper, his works' shifting surfaces suggest the restless lives of an urban underclass. This week's new exhibitions 2010-10-22T23:07:00Z It can be used as a bleaching agent for oils, waxes, fabrics, and starch: It oxidizes the colored compounds in these substances to colorless compounds. Chemistry 2019-02-14T00:00:00Z For example, she said, Russia produces its own paper but uses foreign bleaching agents, or urgently needs foreign-made packing materials for food stuff produced in Russia. Russian cenbank eyes rate cut, warns of structural economic changes 2022-04-21T04:00:00Z He called hydrogen peroxide “a really volatile chemical and a bleaching agent,” and expressed concern that even saline-diluted solutions could be harmful if used instead of legitimate treatments or vaccines. Asthma group warns against social media trend of inhaling hydrogen peroxide to treat coronavirus 2021-09-22T04:00:00Z In Bolivia, medical workers had to care for five people who ingested a toxic bleaching agent falsely touted as a COVID-19 cure. Nurses fight conspiracy theories along with coronavirus 2021-03-13T05:00:00Z Chlorine dioxide is a bleaching agent found in a substance claiming to cure a range of illnesses often advertised as "miracle mineral supplement", or MMS. Fake cures in Bolsonaro's Brazil 2020-07-11T04:00:00Z The substance released by such cards or badges - the bleaching agent chlorine dioxide - is potentially harmful, and the subject of a warning from the US drug regulator, the FDA. Is a coronavirus 'cure' being secretly poisoned? 2020-06-06T04:00:00Z It contains chlorine dioxide, a bleaching agent, and health authorities have warned of the dangers of drinking it. The false vaccine rumours seen by millions 2020-05-08T04:00:00Z Food and Drug Administration warns against ingesting the bleaching agent. NOT REAL NEWS: A look at what didn’t happen this week 2020-01-31T05:00:00Z In reality, writes Sommer, MMS is a potentially deadly concocting that becomes the bleaching agent chlorine dioxide when combined with citric acids typically found in lemon juice and lime juice. Trump-loving conspiracy nuts tout drinking "dangerous bleach" as miracle cure for coronavirus 2020-01-28T05:00:00Z Generally, they are composed of a solution of sodium chlorite and distilled water, with instructions for consumers to add citric acid, which turns them into a powerful bleaching agent. Drinking Bleach Won’t Cure Cancer or Anything Else, F.D.A. Says 2019-08-13T04:00:00Z The suit claims that a bleaching agent was improperly applied for an “extended period of time.” Woman claims Penney’s hair coloring burned her, seeks $4.5M 2018-08-06T04:00:00Z Hydrogen peroxide is a bleaching agent and can be used to brighten teeth in small amounts, but can lead to enamel and nerve damage if too much is present. Teeth whitening scammers must pay £1.6m 2018-05-24T04:00:00Z One was laser whitening, in which a laser beam activates a chemical bleaching agent applied to the teeth; Dr. Smigel helped develop and popularize it. Irwin Smigel, New York Dentist Behind Cosmetic Techniques, Dies at 92 2016-10-17T04:00:00Z But Merthyr crown court in south Wales was told that their products contained dangerously high levels of hydrogen peroxide, which can be used as a bleaching agent. Father and son jailed for selling dangerous DIY teeth-whitening kits 2016-09-16T04:00:00Z They were convicted in 2009 of planning to drain plastic soft-drink bottles with syringes and refill them with concentrated hydrogen peroxide, a bleaching agent also used as a propellant for rockets. ISIS Shares Image of Explosive It Says Brought Down Russian Jet 2015-11-18T05:00:00Z The chain came under fire last year when Food Babe blogger Vani Hari petitioned the company to remove azodicarbonamide, an ingredient used as a bleaching agent and dough conditioner, from its breads. Subway will remove all artificial ingredients from its menu 2015-06-04T04:00:00Z Some dentists also use heat or even lasers to activate bleaching agents. Ask Well: Whiter Teeth 2015-03-20T04:00:00Z Under European law, for example, teeth can’t be professionally whitened with the same strength of bleaching agent that use in the U.S. Yellow: The New Dazzling White The ingredient, azodicarbonamide, is approved by the Food and Drug Administration for use in food as a bleaching agent and dough conditioner. How Social Media Can Kill Your Brand And Three Ways To Avoid It 2014-06-11T04:00:00Z It is approved by the Food and Drug Administration for use in food as a bleaching agent and dough conditioner. For U.S. stocks, rocky week ends on a downer 2014-04-11T23:50:19Z As a food additive, azodicarbonamide is used as a flour bleaching agent and as an oxidizing agent in dough to improve its performance for bakers. Hundreds of foods in U.S. contain 'ADA' plastics chemical: report 2014-02-27T05:05:42Z Subway said last week it would stop using a bleaching agent chemical -- one also used in making yoga mats and fake leather -- in its bread. Chick-fil-A to cut antibiotics from chicken 2014-02-12T13:11:00Z The bleaching agent is used in making paper. Feds investigating Maryland train explosion 2013-05-29T13:57:00Z A bleaching agent, sodium chlorate is used in making paper. Fire Erupts After Train Hits Truck in Maryland 2013-05-29T00:30:56Z By the Dimmock process the wings are first acted upon by a saturated solution of the chloride of lime, chlorine being, of course, the bleaching agent. Directions for Collecting and Preserving Insects 2012-03-28T02:00:31.483Z Instruction is, to some extent, already available as to soaps, detergent solutions and bleaching agents. Household Administration Its Place in the Higher Education of Women 2011-07-20T02:00:13.547Z It also acts as a bleaching agent by extracting the oxygen from the impurities and lastly it acts as a disinfectant. The Philippine Agricultural Review Vol. VIII, First Quarter, 1915 No. 1 2011-04-13T02:00:12.527Z The ammonia in the urine was the bleaching agent. — During the 17th century, people relied on their barbers for the care of hair and teeth. A history of tooth-whitening 2010-11-16T05:16:00Z Substituting cheaper and heavier lime for cornstarch cuts the cost of producing the bleaching agent, which is sold by weight. Pulverized lime used to bleach Chinese flour: media 2010-04-08T14:16:00Z In this method no acid or chrome is necessary, as the active bleaching agent is the oxygen of the air. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. Weak oxidants may also be used as bleaching agents to remove coloured by-products without seriously attacking the ligno-cellulose, which is obtained in its bleached form. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5 "Cat" to "Celt" The solution has a pale yellow colour, and is a strong oxidizing and bleaching agent; it is readily decomposed by hydrochloric acid, with evolution of oxygen. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 "Chitral" to "Cincinnati" It is usually employed in combination with other bleaching agents. Philippine Mats Philippine Craftsman Reprint Series No. 1 More efficient bleaching agents of recent introduction are hydrogen dioxide in a 25% solution or a saturated solution of sodium peroxide; they are less irritating and much more convenient in application. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 2 "Demijohn" to "Destructor" Were it not for the expense, hydrogen peroxide would be the ideal bleaching agent for the animal fibers. Textiles and Clothing What substances studied are used as bleaching agents? An Elementary Study of Chemistry It will not stand the action of as powerful bleaching agents, and, consequently, weaker ones must be used. The Dyeing of Woollen Fabrics Sunshine is used to bleach all mat straws, but more often they are also treated with boiling water to which certain bleaching agents have been added. Philippine Mats Philippine Craftsman Reprint Series No. 1 The substance almost universally used as a rapid artificial bleaching agent is chlorine, best known to us as a constituent of common salt. General Science Watt was one of the first to introduce the use of chlorine as a bleaching agent. Showell's Dictionary of Birmingham A History and Guide Arranged Alphabetically This reaction can be employed in the preparation of chlorine, or the nascent chlorine may be used as a bleaching agent. An Elementary Study of Chemistry Chlorine, elementary, greenish-yellow gas obtained from common salt; powerful as a disinfectant, and a bleaching agent. The Nuttall Encyclopædia Being a Concise and Comprehensive Dictionary of General Knowledge The leaves are employed as a bleaching agent in boiling water. Philippine Mats Philippine Craftsman Reprint Series No. 1 This tendency of chlorine to combine with hydrogen makes it valuable as a bleaching agent. General Science It is not obtained in the free state, but in an orange-yellow water solution, which is a strong reducing and bleaching agent. The Gutenberg Webster's Unabridged Dictionary Section F, G and H In some processes the electrolysis affords directly an alkaline hypochlorite or a chlorate, the former being of wide commercial use as a bleaching agent in textile works and in the paper industry. The Story of Electricity It is a bleaching agent, a disinfectant, and a very active compound, having great affinity for water, but it will not support combustion. An Introduction to Chemical Science The bleaching agents most likely to have been used are oxalic, citric, or hydrochloric acid, bleaching powder solution, or acid sulphite of sodium. Forty Centuries of Ink or, a chronological narrative concerning ink and its backgrounds, introducing incidental observations and deductions, parallels of time and color phenomena, bibliography, chemistry, poetical effusions, citations, anecdotes and curiosa together with some evidence respecting the evanescent character of most inks of to-day and an epitome of chemico-legal ink. Chlorine gas has a very injurious effect on the human body, and hence cannot be used directly as a bleaching agent. General Science It decomposes into water and oxygen, and is manufactured in large quantities for an oxidizing and bleaching agent. The Gutenberg Webster's Unabridged Dictionary Section F, G and H The harmless nature of sulphurous acid makes it very desirable as a bleaching agent, especially in the home. General Science Ozone is a disinfectant, like other bleaching agents, and serves to clear the air of noxious gases and germs of infectious diseases. An Introduction to Chemical Science Cl attacks organic matter and germs as it does the membrane of the throat or lungs, owing to its affinity for H. Cl is the best bleaching agent for cotton goods. An Introduction to Chemical Science |
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