In dilactic acid, a pale yellow, amorphous, easily fusible substance, formed, along with lactide, by heating lactic acid. Formula C6H10O5·2(C3H4O)·O2H2. Its salts are diˈlactatesn.So called because it contains two equivalents of lactyl, C3H4O, the radical of lactic acid.
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1865 H. WattsDict. Chem. III. 461Dilactic acid..remains as a pale-yellow, amorphous, easily fusible mass, when lactic acid is exposed for some time to a temperature between 130° and 200°.