Sodium Metabisulfite
Product Name: Sodium Metabisulfite (Food Grade)
CAS No.: 7681-57-4
Molecular Formula: Na2S2O5
Packaging: 25kg/bag
Application:
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.
Specification
|
Item |
Specification |
|
Purity |
96.50% min |
|
So2 |
66.28% max |
|
Fe |
0.003% max |
|
Insoluble in water |
0.10% max |
|
Heavy metals (Pb) |
0.0005% max |
|
As |
0.0001% max |
|
PH |
4-4.5 |