英德
有道
百度
谷歌
图片
维基
百科
叠氮化钠 [dié dàn huà nà]
[无化] sodium azide
- 以工业氯醇橡胶为原料，通过与叠氮化钠反应制备出支化聚叠氮缩水甘油醚（B GAP）。
Branched glycidyl azide polymer(B GAP) was prepared from industrial polyepichlorohydrin(PECH) rubber as a starting material after reaction with sodium azide. - 实验表明，当用叠氮化钠为氨源取代羟基成叠氮基时，经过分批加入锌粉可还原成伯氨，得到70%的产率。
Experiments showed that when using azide as the ammonia source to replace the hydroxyl into azido, then adding zinc powder can be reduced to the product, obtained 70% yield. - 这是因为叠氮化钠仅淬灭“工作反应”的化学发光信号，而其它的自由基淬灭剂则同时淬灭“工作反应”和“参比反应”的化学发光信号。
It is because that sodium azide only quenches the CL signal of the working reaction, whereas other similar compounds quench the CL signal of both working reaction and reference reaction.
 |
 |
 |
 |
 |
 |
 |
中国词汇量第二的英语词典
更多精彩，登录后发现......
