Stability :
High moisture absorption in air and easily to dissolve in water.Hydrogen sulfide is produced by acid .aqueous solution shows alkalinity
Physical:
The products are generally pink,orange yellow.khaki flakes ,soluble easily in water,slightly soluble in alcohol
Specification:
Item | Class 1 | Clsss 2 | |||
Premium | First | Qulified | Premium | First | |
Assay( Na2S),w/%≥ | 60 | 60 | 60 | 60 | 60 |
Iron,w/%≤ | 0.002 | 0.003 | 0.005 | 0.015 | 0.03 |
Sodium Sulfite(Na2SO3),w/%≤ | 1 | - | - | - | - |
Sodium Thiosulfate(Na2S2O3),W/%≤ | 2.5 | - | - | - | - |
Insoluble water,w/%≤ | 0.05 | 0.05 | 0.05 | 0.15 | 0.2 |
Sodium Carbonate(Na2CO3),w/%≤ | 2 | - | - | 3.5 | |
Mainly used by vat dyeing, printing and stripping , reduction cleaning, leaching textile materials such as silk,wool, nylon and other fibres bleaching mechanical pulps ,thermo mechanical pulps, deinked pulps bleaching kaolin bleaching foodstuffs like sugar, honey , gelatin etc .
Reducing agent for organic synthesis and pharmaceuticals.
Keep only in closed, properly labeled containers. Do not store in zinc, aluminum, or copper containers. Store in cool, dry, ventilated area to prevent it from being deliquescent. Separate from acids, acidic materials, oxidizing agents.