A snow white, crystalline powder, permanent in the air, odorless, having a cooling, saline taste and a slightly acid reaction. Soluble in 3 parts of water at 15° C. (59° F.), and 1.37 parts of boiling water; very sparingly soluble in alcohol.


One part by weight in nine parts of distilled water. Filter. Specific gravity 1.030 at 15° C, containing 10 per cent of the anhydrous salt. Proportion 10 to 1.