| 释义 |
pyrotartaric, a. Chem.|ˌpaɪərəʊtɑːˈtærɪk|
[f. pyro- 3 a + tartaric: cf. F. pyrotartarique, substituted for pyrotartareux (De Morveau and Lavoisier 1787).]
In pyrotartaric acid, C5H8O4, a colourless crystalline substance, obtained by the dry distillation of tartaric acid. So pyrotartaric anhydride, C5H6O3; pyrotartaric ether, etc.
1794G. Pearson tr. De Morveau, etc. Table Chem. Nom. 15 Basis of Pyro-tartaric Acid. 1815Henry Elem. Chem. (ed. 7) II. 208 From the experiments of Fourcroy and Vauquelin, it appears that the pyrotartaric acid is a peculiar species. 1819J. G. Children Chem. Anal. 280 Pyrotartaric acid..is solid, extremely acid to the taste, and reddens vegetable blues strongly. 1866Odling Anim. Chem. 36 Diatomic Fatty Acid Series: C5H8O4 Pyrotartric.
Hence pyroˈtartranil, C11H11NO2, formed by heating aniline with the acid; pyrotartraˈnilic acid, C11H13NO3 (hence pyrotarˈtranilate, a salt of this); pyroˈtartrate, a salt of pyrotartaric acid; pyroˈtartrimide, the imide of this acid; and other derivatives. Also † pyro-ˈtartarous, -tarˈtareous a. = pyrotartaric; † pyroˈtartarite, -ˈtartrite = pyrotartrate.
1790Kerr tr. Lavoisier's Elem. Chem. 261 The name of Pyro-tartarous acid is given to a dilute empyreumatic acid obtained from purified acidulous tartarite of potash by distillation in a naked fire. c1790tr. De Morveau's, etc. Table Chem. Nom. in Encycl. Brit. (ed. 3) IV., 598 Pyro⁓tartareous acid. Ibid., Pyro-tartarite of lime. 1805Nisbet Dict. Chem., Table Nomencl. i, Pyrotartareous, Pyrotartrites. 1817T. Thomson Chem. (ed. 5) II. 150 The French chemists..distinguished them by the names of tartarous and pyrotartarous acids; which were afterwards changed into those of tartaric and pyrotartaric acids. 1836Brande Man. Chem. (ed. 4) 990 The pyrotartrates of ammonia, potassa,..and lime, are very soluble. 1856Jrnl. Chem. Soc. VIII. 172 Pyrotartanil. Ibid. 173 Pyrotartanilic acid is a very stable though rather weak acid. Ibid., Pyrotartanilate of ammonia. 1866–8Watts Dict. Chem. IV. 775 Pyrotartranil..is easily soluble in..aqueous alkalis, by which when heated it is converted into pyrotartranilic acid. Ibid., Pyrotartrimide forms small needles or hexagonal plates belonging to the trimetric system. |