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CAS No:7757-83-7 disodium
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Sodium sulfite

  • CAS No.: 7757-83-7
  • Purity: 95%-98%
  • Min quantity: 10 Metric Tons
  • Weight: 126.042739
  • Place of Orign: Xinxiang ,Henan,China
Ms.Betty Gao

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Item specifics

  • Product Name.:Sodium sulfite
  • CAS No: 7757-83-7
  • Weight: 126.042739
  • Formula: Na2O3S
  • Melting Point: 500 °C
  • Density: 2.633

Details

Molecular Formular: Na2SO3
Molecule weight: 126.04
Appearance: White or light yellow crystalline powder
Quality standard: HG/T 2967-2000

Company standard
Item Index
Top-grade First grade Qualified product
Total content(as Na2SO3)% ≥97.0 ≥96.0 ≥93.0
Fe(as Fe)% ≤0.003 ≤0.005 ≤0.02
Water-insoluble % ≤0.02 ≤0.03 ≤0.05
Free alkali(as Na2Co3)% ≤0.10 ≤0.40 ≤0.80
Sulfate(as Na2SO4)% ≤2.0 -- --
Chloride(as NaCI) ≤0.10 -- --

Application:
1. Used as decolorizer in tannage and leather industry and plant fiber;
2. Used as reducing agent in industrial manufacture.
Packing: in white PP laminated bag with inner poly bag.
Net weight: 25 kg/bag, 50kg/bag.

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