Oxalic Acid, Synonyms : Oxalic Acid

There is usually two molecules of crystalized water in it , so it is a kind of transparent, colorless crystals whose structures includeαtype (diamond) andβtype (single inclined crystal), and the melting points of them are 189.5 and 182 celsius degree. The relative dencity of them are 1.900 and 1.895. The refractive index is 1.540. It will sublimate in 100 celsius degree, and more quikly 125, in large quantity in 157 starting to decompose. It is easy to be soluble in ethanol, and can be soluble in water, little in ethyl ether, insoluble in benzene and chloroform.