| 释义 |
paracyˈanogen Chem.
[para-1 2.]
An isomer or polymer of cyanogen, a dark brown porous substance formed in small quantity when cyanogen is prepared from cyanide of mercury. So paraˈcyanate, paracyˈanic adjs., paraˈcyanide.
1854J. Scoffern in Orr's Circ. Sc., Chem. 500 Cyanide of mercury..evolving cyanogen and metallic mercury when heated in a close vessel, and leaving a black residue termed paracyanogen. 1857Mayne Expos. Lex., Paracyanate..applied by Berzelius to a fulminate. Ibid., Paracyanicus..applied by Berzelius to fulminic acid, because, though having the same composition as cyanic acid, it widely differs in relation to its properties: paracyanic. 1864H. Spencer Biol. I. 7 In paracyanogen, formed of the same proportions of these elements in higher multiples, we have a solid which does not fuse or volatilize at ordinary temperatures. 1866Watts Dict. Chem. IV. 342 Paracyanide of silver. |