• sodium hydrosulfite
  • sodium hydrosulfite
  • sodium hydrosulfite

Sodium Hydrosulfite

  • Na2S2O4: ≥90%
  • Water insolubles: ≤0.05%
  • Iron (Fe): ≤20ppm
  • Zinc (Zn): ≤1ppm
  • Other heavy metals (as Pb): ≤1ppm
  • Shelf life(months): 12

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■ Specifications
CAS No.:7775-14-6
MF:Na2S2O4
EINECS No:231-890-0
Packaging & Shipping
Application :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 
■ Full Data
  90% GRADE 88% GRADE 85% GRADE Food additive GRADE
Na2S2O4 ≥90% ≥88% ≥85% ≥85%
Water insolubles ≤0.05% ≤0.05% ≤0.05%  
Iron (Fe) ≤20ppm ≤20ppm ≤20ppm ≤20ppm
Appearance of Aqueous solution       clear
Zinc (Zn) ≤1ppm ≤1ppm ≤1ppm ≤1ppm
Arsenic(As)       ≤1ppm
Other heavy metals (as Pb) ≤1ppm ≤1ppm ≤1ppm ≤1ppm
Format(as HCHO)       ≤0.05%
Shelf life(months) 12 12 12 12
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