English name: Sodium hydroxide
CAS RN：1310-73-2
EINECS No.: 215-185-5
Molecular formula: NaOH
Molecular weight: 39.99707

Physicochemical Properties
Pure traits is colorless and transparent crystal.
Melting point 318.4 ^oC
boiling point 1390 ^oC
relative density 2.130
Solubility soluble in water, and strongly exothermic. And soluble in ethanol and glycerin; do not dissolve in acetone, ethyl ether. Lu on the air, the final will be completely dissolved into solution.

Purposes: the basic chemical raw materials, used for high-purity reagents, are widely used in chemical industry, metallurgy, paper, petroleum, textiles, as well as daily-use chemical and other departments.