Molecular formula: NaCl Molecular weight: 58.44

Appearance: White cubic crystal or crystal powder. When the temperature is 25, one gram of such product can be soluble to 2.8 ml cold water, 2.6ml boiled water, 10ml glycerol, very slightly soluble to ethanol. Water solubility will decrease with the existence of hydrochloric acid, almost insoluble to concentrated hydrochloric acid.

The water solution assumes neutral, PH is 6.7-7.3. Relative density: 2.17. Melting.

Point: 804. Boiling point: 1413. Median lethal dose( rats, peroral).