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以苯胺和溴乙烷為原料,用四乙基氫氧化銨作相轉移催化劑,在常壓下合成N, N二乙基苯胺.N, N - diethylaniline was synthesized under normal tempreture with tetraethyl ammonium hydroxide as phase transfer catalyst.利用β-環(huán)糊精-1,2-二溴乙烷乙醇混合體系作增敏劑首次提出了用熒光光度法測量阿苯達唑含量的方法.A fl...
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天然氣不含硫, 含甲烷88-99%, 乙烷6%和丙烷3%.The gas , which is sulphur - free , contains 89 - 99 % methane, up to 6 % ethane, and 3 % propane.某些苯代 ( 或多苯 ) 環(huán)氧乙烷是制取帶苯環(huán) ( 或二苯 ) 碳烯的極好原料.Phenyl ( or polyphenyl ) substituted epoxides serve a...
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“碘乙烷”的英語可以翻譯為：iodoethane，ethyl iodide ...
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“溴乙烷”的英語可以翻譯為：omoethane，ethyl bromide ...
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“乙烷”的英語可以翻譯為：ethane，[醫(yī)] ethane，methylmethane，hexane ...
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“乙烷基”的英語可以翻譯為：[醫(yī)]ethyl ...
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“氯乙烷”的英語可以翻譯為：[化] anodynon，antidolorin，[醫(yī)] aether chloratus，aethylis chloridum ...
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“碘乙烷”的拼音為：diǎn yǐ wán...
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“溴乙烷”的拼音為：xiù yǐ wán...
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為了凝結氯乙烷氣體,必須使用大量的冷卻水.Great quantities of cooling water must be available for condensation of the ethylchloride.簡述了二氯乙烷的理化性質 、 作業(yè)標準和法規(guī).The article describes the physico - chemical properties, operative standers and laws o...