“氯甲苯”造句
9144590
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2024年06月15日 04:10:10研究了用无溶剂重结晶法提纯2,6二氯甲苯.
Purification of 2,6 dichlorotoluene by the recrystallization method without solvent was studied.
以对氯甲苯为原料,经氯化、水解反应合成对氯苯甲酰氯,总收率. 6%.%.
The total yield and 4 - chlorohenzoyl chloride. 6 % and. %.
研究炭管采集空气中邻 - 氯甲苯的气相色谱分析方法.
GC analytical method for o - chlorotoluene in the workplace air using sampling by charcoal tube was studied.
Purification of 2,6 dichlorotoluene by the recrystallization method without solvent was studied.
以对氯甲苯为原料,经氯化、水解反应合成对氯苯甲酰氯,总收率. 6%.%.
The total yield and 4 - chlorohenzoyl chloride. 6 % and. %.
研究炭管采集空气中邻 - 氯甲苯的气相色谱分析方法.
GC analytical method for o - chlorotoluene in the workplace air using sampling by charcoal tube was studied.
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