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Sodium Hydro Sulfite

Sodium Hydrosulfite is a white, free flowing and crystalline powder that is low dusting and readily soluble in water. It exhibits strong reducing action in aqueous solutions and is highly stable when kept in a dry clean container away from heat.

Application

TEXTILES
Reduction agent for vat-dyeing cotton fibers and blends. Reduces and eliminates colors not absorbed in polyester fibers. Reduction agent for stripping colorants from textile fibers and in cleaning dyeing equipment.

PULP AND PAPER
Bleaching agent for mechanical and thermo-mechanical pulp and for deinking recycled paper.

OTHERS
Bleaching agent for sugarcane, glues, gelatins, soaps, oils and clay. Reducing or bleaching agent in production of dyestuffs and pharmaceuticals. Reduction of hexavalent chromium to trivalent state for effluent treatment.

Description

  • Chemical Formula: Na2S2O4
  • Molecular Weight: 174.10
  • CAS Number: 7775-14-6

SODIUM HYDROSULFITE(Na2S2O4)

Grade Item Unit Spec.
85% Appearanc
Assay
Sodium Carbonate
(Na2CO3)
Fe
Sodium Thiosulfate
(Na2S2O3)
Wt%
ppm
ppm
ppm
White crystalline powder
85.0 Min.
10.0 Max.
20.0Max.
1.00
85% Appearanc
Assay
Sodium Carbonate
(Na2CO3)
Fe
Wt%
ppm
ppm
White crystalline powder
88.0 ~ 92.0
1.50 Max.
20.0Max.
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