Chinese name: sodium sulfide

English name: SODIUM SULFIDE

Alternative name: anhydrous sodium sulfide, xanthine

Chemical formula: Na2S

Molecular weight: 78.04

CAS registration number: 1313-82-2

EINECS login number: 215-211-5

Melting point: 950 ℃

Water solubility: 186 g/L (20 ℃)

Density: 1.86

Under normal temperature, the pure product is colorless or purplish prismatic crystal, and the industrial product is often pink, brownish red, and earthy yellow block due to impurities.

It has a bad smell. Soluble in cold water, extremely soluble in hot water, slightly soluble in alcohol. Industrial products are generally mixtures of different crystal water forms, and contain different degrees of impurities. In addition to the appearance and color, the density, melting point, boiling point, etc. also vary due to the influence of impurities.