Sodium Metabisulfite

Specifications
Sodium metabisulfite
Sodium metabisulphite of high quality industrial grade & foodstuff grade.
White or light yellow crystal
Name:
Sodium metabisulfite
Appearance:
White Free Flowing Fine Crystal or Powder
Specification:
Industrial grade
1) Purity (calculated with Na2S2O5): 95%
2) Iron (Fe): 0.005%
3) SO2: 65%
4) pH value: 4.0-4.6
5)Water insoluble matter: 0.05%
Foodstuff grade
1) Purity (calculated with Na2S2O5): 95%
2) Iron (Fe): 0.0005%
3) Arsenic (As): 0.0002%
4) pH value: 4.0-4.6
5) Water insoluble matter: 0.05%
6) Heavy metal (Cal. In Pb): 0.002%
Package:
25kg, 50kg PP woven bag with plastic lining, or 1000kg per package
Usage:
1. Dye printing mordant.
2. Textile antichlor after being bleached.
3. Reducing agent and sulfonating agent for chemical and medical use.
4. Bamboo, wood, paper fiber bleaching agent, non-ferrous metal ore dressing agent, waste water treating, rubber freezing agent.