before a vowel tartr- [f. F. tartre, TARTAR1], in names of chemical compounds containing or derived from tartaric acid; as Tartrazine [AZO- + -INE5], a fast and brilliant dye-stuff of rich orange yellow; Tartrethylic acid [ETHYLIC] = ethyltartaric acid, C6H10O6: see quot. 1868; its salts are Tartrethylates; Tartromethylic acid [METHYLIC] = methyltartaric acid, C5H8O6: its salts are Tartromethylates; Tartrovinic acid = tartrethylic acid. So tartrocarbhydric, tartroglyceric, etc.
1894. Times, 15 Aug., 12/1. *Tartrazin, a colour noteworthy not only for its fastness to light, but also because of its brilliancy and purity.
1857. Miller, Elem. Chem., III. 318. Vinic or ethylic acids, such as sulphethylic, oxalethylic, and *tartrethylic.
1868. Watts, Dict. Chem., V. 694. Tartrethylic or Tartrovinic acid … crystallises in elongated prisms, with oblique bases; it is colourless, inodorous, tastes both sweet and sour.
1837. R. D. Thomson, in Brit. Ann., 342. When tartaric and racemic acids are treated … with pyroxylic spirit … similar acids are formed which may be termed *tartro carbydric and racemo carbydric acids.
1838. T. Thomson, Chem. Org. Bodies, 182. *Tartromethylate of potash may be obtained in the same way as tartrovinate of potash. Ibid., 180. *Tartromethylic acid … was also discovered by M. Guerin-Varry.
1837. R. D. Thomson, in Brit. Ann., 340. *Tartrovinic acid, M. Guerin Varry … obtained it by boiling tartaric acid with absolute alcohol for a considerable time [etc.].
1838. T. Thomson, Chem. Org. Bodies, 174. A dilute solution … left exposed to an atmosphere of 77°, lets fall some … crystals of tartrovinic acid.
