Tartaric Acid
Tartaric acid forms inodorous, sour, scarcely transparent prisms, soluble in 2 parts of water at 60°, and its own weight of boiling water. It contains about 98 of combined water, fuses at 220° Fahr., boils at 260°; and, at about 400, after losing 1/4 of its water, is converted into tartralic acid. With the bases it forms salts called TARTRATES. Tartaric acid is chiefly emthe clear liquid, and evaporate it to a syrupy consistence. If the citric acid was pure, the liquid remains clear and of a fine red color; the presence of only 1 per cent. of tartaric acid renders it cloudy, and deposits tartrate of the sesquioxide. (U.S. Dis.)