Have strong corrosive, can make up water, desiccant, but not dry so2, carbon dioxide, hydrogen and acidity gas, etc. And in the air ChaoXie (for easy, water and dissolve belongs to a physical change), Soluble in water, and release of heat. The melting point for 318.4 degrees Celsius. Besides soluble in water, soluble in ethanol, sodium hydroxide also glycerol, But insoluble in ether, acetone, liquid ammonia.

The liquid is a colorless, have the feeling acerbity and satiny liquid. Sodium hydroxide in air can react with carbon dioxide bad!