Also known as anhydrous citric acid, chemical name: 2-hydroxypropane-1,2,3-tricarboxylic acid. It is a colorless translucent crystal, white granule or white crystalline powder; odorless, with a very sour taste; its aqueous solution shows an acidic reaction. It is slightly efflorescent in dry air; it is very easily soluble in water, easily soluble in ethanol, and slightly soluble in ether.
Chemical name: Calcium chloride. It is a white, hard, lumpy or granular or crystalline powder; odorless, and very deliquescent. It is very soluble in water and soluble in ethanol.