翻訳と辞書 Words near each other ・ Dichlorine monoxide ・ Dichlorine trioxide ・ Dichloro(1,3-bis(diphenylphosphino)propane)nickel ・ Dichloro(cycloocta-1,5-diene)platinum(II) ・ Dichloroacetamide ・ Dichloroacetic acid ・ Dichloroacetylene ・ Dichloroaniline ・ Dichloroarcyriaflavin A synthase ・ Dichlorobenzene ・ Dichlorobis(ethylenediamine)nickel(II) ・ Dichlorobutane ・ Dichlorocarbene ・ Dichlorochromopyrrolate synthase ・ Dichlorodifluoroethylene ・ Dichlorodifluoromethane ・ Dichlorodifluoromethane (data page) ・ Dichlorodiphenyldichloroethane ・ Dichlorodiphenyldichloroethylene ・ Dichloroethane ・ Dichloroethene ・ Dichlorofluorescein ・ Dichlorofluoromethane ・ Dichloroisocyanuric acid ・ Dichloroisoprenaline ・ Dichloromethane ・ Dichloromethane (data page) ・ Dichloromethane dehalogenase ・ Dichloromethyl methyl ether ・ Dichloromuconate cycloisomerase Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Dichlorodifluoromethane ： ウィキペディア英語版 Dichlorodifluoromethane |Section2= |Section3= }} Dichlorodifluoromethane (R-12) is a colorless gas usually sold under the brand name Freon-12, and a chlorofluorocarbon halomethane (CFC) used as a refrigerant and aerosol spray propellant. Complying with the Montreal Protocol, its manufacture was universally banned in 1996 due to concerns about its damaging impact to the ozone layer.〔(Dichlorodifluoromethane at LearnChemistry (Royal Society of Chemistry) )〕 Its only allowed usage is as fire retardant in submarines and aircraft. It is soluble in many organic solvents. Dichlorodifluoromethane was one of the original propellants for Silly String. R-12 cylinders are colored white. ==Preparation== It can be prepared by reacting carbon tetrachloride with hydrogen fluoride in the presence of a catalytic amount of antimony pentachloride: CCl4 + 2HF → CCl2F2 + 2HCl This reaction can also produce trichlorofluoromethane (CCl3F), chlorotrifluoromethane (CClF3) and tetrafluoromethane (CF4). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Dichlorodifluoromethane」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.