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AGRICULTURAL PRODUCTS
Inorganic chem
Organic chem
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SODIUM SULPHIDE
  
Molecular Formula: Na2S

Molecular Weight:
78.04

Properties:
Flaky and brownish red; easily soluble in water, slightly soluble in alcohols, insoluble in aethers; its aqueous solution is highly basic; can be easily oxidized in the air; toxic; pure sodium sulfide is colorless crystalline powder easily soluble in water.
 
Item
GB/T10500-2000
Standard value of Class qualifier
Measured value
Sodium sulfide(Na2S)
≥60.0
60.32
Sodium sulfite(Na2SO3)
1.08
Sodium thiosulfate(Na2S2O3)
0.86
Iron(Fe)
≤0.15
0.10
Sodium carbonate(Na2CO3)
≤5.0
2.45
Water insolubles
≤0.80
0.30
Used in the manufacture of sulphur dyes sulphur black and sulphur blue; as flotation agent of ores; as cooking agent of paper; also widely used in textiles, pigments and rubber industries.
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