| 释义 |
triamide Chem.|ˈtraɪəmaɪd|
[f. tri- 5 a + amide.]
A compound in which the three acid hydroxyls (OH) of a tribasic acid are replaced by three amidogen groups (NH2): the hydrogen of the amidogen groups may be replaced by metals or by one or more monovalent radicals; e.g. citramide, C3H4(OH)(CO.NH2)3, the triamide of citric acid, C3H4(OH)(CO.OH)3; cyanuramide or melamine, C3N3(NH2)3, the triamide of cyanuric acid, C3N3(OH)3. For the earlier view of the structure of triamides, see quot. 1863–72.
1862Miller Elem. Chem. (ed. 2) III. 427 As an instance of a secondary triamide, phenylcitramide may be given. 1863–72Watts Dict. Chem. I. 173 Primary Triamides.—They represent 3 molecules of ammonia, in which 3 atoms of hydrogen are replaced by a triatomic acid-radicle:—Phosphamide..N3.(PO){ppp}.H6. 1866Odling Anim. Chem. 19 C3N3(H2N)3 Cyanuric triamide. |