| 单词 | ethene-diamine |
| 释义 | > as lemmasethene-diamine An amine, or compound derived from two molecules of ammonia the hydrogen of which is replaced partly or wholly by one or more basic radicals, as ethene-diamineNH2NH2 C2H4. ΚΠ 1866 E. Frankland Lect. Notes 367 The diamines are formed by the coupling together two atoms of nitrogen in two molecules of ammonia. 1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xxxiii. 337 The ethylene diamines are volatile bases obtained by acting with ammonia on ethylene dibromide. < as lemmas |
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