| 单词 | trioxide |
| 例句 | Sulfur trioxide forms slowly when heating sulfur dioxide and oxygen together, and the reaction is exothermic: Chemistry 2019-02-14T00:00:00Z These include antimony trioxide, which is often used in plastic production and flame retardants for consumer products, and six haloacetic acids that may be produced during chlorine-based disinfection processes for drinking water. 8 newly flagged substances that could give you cancer 2022-01-12T05:00:00Z Later, chemists invented far more stable green dyes, including the chromium trioxide ink that put the green in our bank notes beginning in the 1860s. Our World, Ever Green 2015-04-20T04:00:00Z Arsenic trioxide is odourless, tasteless, highly soluble—and lethal. Giant headache 2014-09-25T04:00:00Z 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 Dry, solid xenon trioxide, XeO3, is extremely explosive—it will spontaneously detonate. Chemistry 2019-02-14T00:00:00Z Both antimony trioxide and the suite of haloacetic acids have previously been recognized by state and federal agencies as hazardous substances. 8 newly flagged substances that could give you cancer 2022-01-12T05:00:00Z In fact, carbon trioxide is not normally found in nature, and India's independence leader was killed on 30 January 1948. Indian textbooks say 'Japan nuked US' 2014-02-24T14:08:12Z In the form of arsenic trioxide, it can be used to treat acute promyelocytic leukemia, the book says. ‘King of Poisons’ recounts the fascinating history of arsenic 2013-06-10T17:17:13Z The phone is made of environmentally friendly materials and is free of harmful brominated and chlorinated compounds and antimony trioxide. 7 Gadgets for a Greener Office 2012-07-25T17:39:00Z 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 Some places like California have imposed bans or tight restrictions on the use of antimony trioxide in consumer products, and the Occupational Safety and Health Administration has long regulated permissible outdoor exposureto it. 8 newly flagged substances that could give you cancer 2022-01-12T05:00:00Z “How long before the Xenon trioxide reaches 25 degree?” their supervisor asked. A Noble Betrayal 2012-04-28T19:15:00.450Z A term used for the Powder of Algaroth, a white powder which is a compound of trichloride and trioxide of antimony. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z Oxidation may be effected by the addition to the glass mixture of a substance which gives up oxygen at a high temperature, such as manganese dioxide or arsenic trioxide. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" 2012-01-11T03:00:20.463Z The heating process causes the loss of more sulfur trioxide than water, until reaching a concentration of 98.33% acid. Chemistry 2019-02-14T00:00:00Z The other classic example of a modern medicine that originates in TCM is arsenic trioxide, which was approved by the US Food and Drug Administration for use in leukaemia in 2000. Modernization: One step at a time 2011-12-21T18:20:59.013Z Although artemisinin and arsenic trioxide are the archetypal examples of successful modern medicines mined from traditional Asian medicine, they do not represent the ideal convergence of the two systems. Traditional Asian medicine 2011-12-21T18:20:50.867Z Such oxides as sulphur trioxide, nitrogen pentoxide, etc., do not possess acid properties except in combination with water. Heroes of Science Chemists 2011-12-09T03:00:21.047Z The olefines—ethylene, &c.—are generally absorbed by a very strong sulphuric acid prepared by adding sulphur trioxide to sulphuric acid to form a mixture which solidifies when slightly cooled. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z Chromium trioxide dissolves readily in water, and the solution is supposed to contain chromic acid, H2CrO4; the salts of this acid are known as the chromates. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z Indeed, he says, “artemisinin and arsenic trioxide are perhaps the only two examples”. Modernization: One step at a time 2011-12-21T18:20:59.013Z Other than well known success stories — artemisinin for malaria, and arsenic trioxide for leukaemia — there seemed to be a lack of scientifically proven remedies. Traditional Asian medicine 2011-12-21T18:20:50.867Z The solution of arsenious oxide in water reacts acid towards litmus and contains tribasic arsenious acid, although on evaporation of the solution the trioxide is obtained and not the free acid. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 "Armour Plates" to "Arundel, Earls of" These precipitated oxychlorides on continued boiling with water lose all their chlorine and ultimately give a residue of antimony trioxide. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" In addition to these normal salts, others exist, namely bichromates, trichromates, &c., which may be regarded as combinations of one molecular proportion of the normal salt with one or more molecular proportions of chromium trioxide. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z Boron trioxide B2O3 is the only known oxide of boron; and may be prepared by heating amorphous boron in oxygen, or better, by strongly igniting boric acid. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3 "Borgia, Lucrezia" to "Bradford, John" Compounds.—Bismuth forms four oxides, of which the trioxide, Bi2O3, is the most important. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea" Arsenic burns on heating in a current of oxygen, with a pale lavender-coloured flame, forming the trioxide. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 "Armour Plates" to "Arundel, Earls of" Pure antimony is quite permanent in air at ordinary temperatures, but when heated in air or oxygen it burns, forming the trioxide. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" Sodium bichromate, Na2Cr2O7�2H2O, may be obtained by the addition of the requisite quantity of chromium trioxide to a solution of sodium chromate. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z This mixture burns with a green flame forming boron trioxide; whilst boron is deposited on passing the gas mixture through a hot tube, or on depressing a cold surface in the gas flame. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3 "Borgia, Lucrezia" to "Bradford, John" Bismuth tetroxide, Bi2O4, sometimes termed bismuth bismuthate, is obtained by melting bismuth trioxide with potash, or by igniting bismuth trioxide with potash and potassium chlorate. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea" It is easily oxidized by heating with concentrated nitric acid to arsenic acid, and with concentrated sulphuric acid to arsenic trioxide; dilute nitric acid only oxidizes it to arsenious acid. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 "Armour Plates" to "Arundel, Earls of" Nitric acid oxidizes antimony either to the trioxide Sb4O6 or the pentoxide Sb2O5, the product obtained depending on the temperature and concentration of the acid. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" Similarly, spongy platinum accelerates the oxidation of sulfur dioxide to sulfur trioxide, in the commercial manufacture of sulfuric acid. The Chemistry of Plant Life Boron fluoride BF3 was first prepared in 1808 by Gay Lussac and L. Th�nard and is best obtained by heating a mixture of the trioxide and fluorspar with concentrated sulphuric acid. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3 "Borgia, Lucrezia" to "Bradford, John" It contains 50.9% of boron trioxide, and is an important source of commercial borates and boracic acid. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" In composition it approximates to Cr2O3�H2O, but it always contains more or less boron trioxide. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 "Chitral" to "Cincinnati" Mercuric oxide, sulphide and iodide; arsenic trioxide; titanium dioxide and silicon dioxide may be cited as examples. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" The acid commonly used is made by the "contact" process, in which sulphur dioxide is oxidized to sulphur trioxide, and then, with the addition of water, changed to sulphuric acid. The Automobile Storage Battery Its Care And Repair It was isolated by J. Gay Lussac and L. Th�nard in 1808 by heating boron trioxide with potassium, in an iron tube. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3 "Borgia, Lucrezia" to "Bradford, John" The only other large use of arsenic is in the glass industry, arsenic trioxide being added to the molten glass to purify and decolorize the product. The Economic Aspect of Geology Chromic sulphide, Cr2S3, results on heating chromium and sulphur or on strongly heating the trioxide in a current of sulphuretted hydrogen; it forms a dark green crystalline powder, and on ignition gives the sesquioxide. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 "Chitral" to "Cincinnati" When phosphorus burns in an insufficient supply of air the product is partially the trioxide; in oxygen or an excess of air the pentoxide is formed. An Elementary Study of Chemistry If this foil be dried, cut up, put in a reduction-tube, and heated, crystals of arsenious trioxide will be deposited on the cold part of the tube. Aids to Forensic Medicine and Toxicology All molybdenum compounds are converted into the trioxide by boiling with nitric acid. A Text-book of Assaying: For the Use of Those Connected with Mines. A unit is 1 per cent. of tungsten trioxide to the ton, that is, twenty pounds. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Subsequently a method of obtaining boron sulphide was proposed by Fremy, according to which a mixture of boron trioxide, soot, and oil is heated in a stream of the vapor of carbon bisulphide. Scientific American Supplement, No. 841, February 13, 1892 Sulphur trioxide is formed, and as it issues from the tube it is absorbed in water or dilute sulphuric acid. An Elementary Study of Chemistry Saturated hydrocarbons do not react with sulphur trioxide, but unsaturated hydrocarbons are readily attacked by SO_3. Synthetic Tannins The trioxide is a white powder readily dissolved by ammonia. A Text-book of Assaying: For the Use of Those Connected with Mines. Into the end of one of the ignition tubes thus formed, when it is cool, put one-fourth of a gram of arsenic trioxide, As2O3, using paper to transfer it. An Introduction to Chemical Science The product of this reaction is sulphuric acid, so that sulphur trioxide is the anhydride of that acid: SO3 + H2O = H2SO4. An Elementary Study of Chemistry An excess of the trioxide may dissolve in the strong sulphuric acid, forming what is known as fuming sulphuric acid. An Elementary Study of Chemistry The increase in weight gives the boron trioxide. A Text-book of Assaying: For the Use of Those Connected with Mines. Consequently, the increase in weight, after ignition, upon that of the lime taken gives the amount of boron trioxide present. A Text-book of Assaying: For the Use of Those Connected with Mines. Its most important compound is As2O3, arsenic trioxide, called also arsenious anhydride, arsenious acid, white arsenic, etc. An Introduction to Chemical Science Before the introduction of Gooch's process it was usual to determine the boron trioxide "by difference." A Text-book of Assaying: For the Use of Those Connected with Mines. Union takes place at once, and the strongly fuming sulphur trioxide escapes from the jet at the end of the tube, and may be condensed by surrounding the receiving tube with a freezing mixture. An Elementary Study of Chemistry |
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