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单词 diazald
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diazald

英汉-汉英词典
n. 二甲基亚硝基苯磺酰胺
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  • dial n. 钟(表)面; 标度盘; 拨号盘 vt. & vi. 打电话, 拨电话号码
  • zodiacal adj. [天]黄道带的
  • desalted adj. 已脱盐的 v. 脱盐(desalt的过去分词)
英语百科

Diazomethane

Diazomethane laboratory preparation
Preparation of Diazomethane.

Diazomethane is the chemical compound CH2N2, discovered by German chemist Hans von Pechmann in 1894. It is the simplest diazo compound. In the pure form at room temperature, it is an extremely sensitive explosive yellow gas; thus, it is almost universally used as a solution in diethyl ether. The compound is a popular methylating agent in the laboratory, but it is too hazardous to be employed on an industrial scale without special precautions.

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