| 单词 | tetrachloride |
| 例句 | The agency moved to ban asbestos last year and has also proposed banning methylene chloride, perchloroethylene and carbon tetrachloride. EPA proposes banning cancer-causing chemical used in automotive care and other products 2023-10-23T04:00:00Z It also started a production line for optical fiber ultra-high purity germanium tetrachloride, with annual output of 30 metric tons. Factbox: China's major germanium and gallium producers 2023-07-07T04:00:00Z They will also apply to six germanium products: germanium dioxide, germanium epitaxial growth substrate, germanium ingot, germanium metal, germanium tetrachloride and zinc germanium phosphide. China to restrict exports of chipmaking materials as US mulls new curbs 2023-07-04T04:00:00Z That includes the likely next up, perchloroethylene, a solvent used for cleaning and degreasing, and carbon tetrachloride, another solvent that is commonly used to produce other chemicals such as refrigerants. EPA proposes to ban most uses of methylene chloride, a toxic solvent 2023-04-20T04:00:00Z Iodine is soluble in chloroform, carbon tetrachloride, carbon disulfide, and many hydrocarbons, giving violet solutions of I2 molecules. Chemistry 2019-02-14T00:00:00Z Carbon tetrachloride is supposed to be strictly regulated by Russian law, these sources said. Exclusive: Illegally traded chemical halted Russian oil pipeline, tests show 2019-12-18T05:00:00Z Between July and October 2018, employees in the underground nuclear waste repository were potentially overexposed to carbon tetrachloride, nitrogen dioxide and sulfur dioxide, read the notice, including a series of heat-stress incidents, officials said. Key shaft at US nuclear waste dump may be built by 2020 2019-09-02T04:00:00Z It continues to set quotas on the production, import and use of other chemicals like carbon tetrachloride, once widely used in fire extinguishers and refrigerators. China phases out 280,000 T of ozone-depleting substances in 2018:... 2019-03-19T04:00:00Z The notice says employees were potentially “overexposed” to carbon tetrachloride, nitrogen dioxide and sulfur dioxide between July and October 2018. DOE to investigate nuclear repository after alleged exposure 2019-02-25T05:00:00Z Write the Lewis structures for carbon tetrachloride and phosgene. Chemistry 2019-02-14T00:00:00Z However, rather than being destroyed, waste containing carbon tetrachloride is being regularly moved across Russia in trains and tanker trucks to unspecified customers, according to five local traders. Exclusive: Illegally traded chemical halted Russian oil pipeline, tests show 2019-12-18T05:00:00Z Based on those estimates, the authors of the the study published in May surmised that the slower decline in CFC-11 and carbon tetrachloride levels was the result of fresh emissions. Rogue chemicals threaten positive prognosis for ozone hole 2018-11-01T04:00:00Z Another rare warming gas, carbon tetrachloride, once popular as a refrigerant and a solvent but very damaging to the ozone layer, has been banned in Europe since 2002. 'Dodgy' greenhouse gas data threatens Paris accord - BBC News 2017-08-07T04:00:00Z Substitute chlorine atoms for all of the hydrogen atoms, and the result is carbon tetrachloride, the familiar cleaning fluid. Silent Spring—I 2017-01-03T05:00:00Z Like covalent silicon tetrachloride, both the titanium and vanadium tetrahalides react with water to give solutions containing the corresponding hydrohalic acids and the metal oxides: Chemistry 2019-02-14T00:00:00Z She said Khimprom does not destroy carbon tetrachloride, but receives guarantees from customers to which it sells the chemical that it will be fully processed or destroyed as the law requires. Exclusive: Illegally traded chemical halted Russian oil pipeline, tests show 2019-12-18T05:00:00Z Carbon tetrachloride levels were found to be 22,699 times the national limits. Despite contaminants on campus, ill students and state TV expose, school in China stays open 2016-04-20T04:00:00Z Crews will inject emulsified iron and vegetable solutions under high pressure into the ground to help remove lingering contaminants, including carbon tetrachloride. Use of fracking technology planned for groundwater cleanup 2015-07-16T04:00:00Z She died of pneumonia caused by carbon tetrachloride poisoning, according to the F.B.I. Sioux Group Asks Officials to Reopen ’70s Cases 2012-06-15T04:43:43Z Carbon tetrachloride was formerly used in fire extinguishers for electrical fires. Chemistry 2019-02-14T00:00:00Z This manometer, or chlorine meter, contains carbon tetrachloride and is graduated empirically in terms of weight of chlorine per unit of time. Chlorination of Water 2011-09-13T02:00:32.243Z Casualties, who suffered burns and toxic inhalation, were taken to hospital after titanium tetrachloride escaped at the plant. Four injured in toxic gas escape 2010-03-05T07:58:00Z Toward the end of the reaction stopper the bottle and shake violently so that any iodine remaining in solution in the tetrachloride or chloroform may be taken up by the potassium iodide solution. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. Bismuth tetrachloride in combination with the borium salt I just mentioned will have a catalyzing effect on telurox, increasing its activity fifty per cent—more than enough to bring the earth back to its orbit. The Cosmic Deflector Carbon tetrachloride, CCl4, was once used as a dry cleaning solvent, but is no longer used because it is carcinogenic. Chemistry 2019-02-14T00:00:00Z Bismuth and antimony chlorides are decomposed by water with production of oxychlorides, whilst titanium tetrachloride yields titanic acid under the same conditions. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 "Chitral" to "Cincinnati" When, as in the formation of naphthalene tetrachloride, for example, the one ring becomes saturated, the other might be expected to assume the normal centric form and become relatively inactive. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Inside there was that peculiar, professional-cleaning-fluid smell, which is not as alarming as gasoline or carbon tetrachloride, but nevertheless discourages the idea of striking a match. The Ambulance Made Two Trips After copious washing the work is wholly immersed in a considerable volume of the platinum tetrachloride solution at the ordinary temperature. On Laboratory Arts Silicon tetrachloride can be prepared by direct chlorination at elevated temperatures or by heating silicon dioxide with chlorine and carbon: Chemistry 2019-02-14T00:00:00Z The process is carried out in exactly the same way as with the Hübl solution except that the fat is preferably dissolved in carbon tetrachloride instead of in chloroform. The Handbook of Soap Manufacture The reaction may be started, however, by the addition of a few drops of a solution of copper sulphate or platinum tetrachloride. An Elementary Study of Chemistry Carbon tetrachloride and other vaporizing-liquid type extinguishers are not recommended for use in small enclosed spaces, because of the danger of fumes. In Time of Emergency A Citizen's Handbook on Nuclear Attack, Natural Disasters (1968) A few liquids, one of which is carbon tetrachloride, react only very slowly with fluorine at the ordinary temperature. Scientific American Supplement, No. 832, December 12, 1891 This fraction, which consists principally of alcohol, with a little carbon tetrachloride and moisture, is dried with potassium carbonate and returned to the reaction mixture. Organic Syntheses Carbon tetrachloride, as previously mentioned, reacts only very slowly with fluorine. Scientific American Supplement, No. 832, December 12, 1891 A mixture of the vapors of carbon tetrachloride and fluorine inflames spontaneously with detonation, and chlorine is liberated without deposition of carbon. Scientific American Supplement, No. 832, December 12, 1891 Notes Water, ethyl alcohol and carbon tetrachloride form a ternary mixture boiling at about 61'0. Organic Syntheses |
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