- Products
Industry Chemicals
- Sodium Metabisulfite(SMBS)
- Molecular Formula: Na2S2O5
- Molecular weight: 190.09
- CAS NO.: 7681-57-4
- Appearance: White or light yellow crystalline powder
DETAILS
Application:
Sodium metabisulfite is mainly used as preservative in food applications, as an enzyme inhibitor in waste water treatment and leather tanning process. For bleaching wool and jute in textile industries. As antichlor after cotton bleaching printing and dying industry, to destroy cyanides in gold mining industry. Preservative in photo developer solutions, as reducing agent and sulfonating agent for chemical and medical industries etc.
Specifications:
Analysis Item | Specification | ||
TECH Grade | FOOD Grade | High Purity Grade | |
Assay | 96.5% min | 97.0% min | 98.0% min |
Iron (as Fe) | 0.005% max | 0.003% max | 0.001% max |
Appearance of solution | - | Colorless and transparent | - |
Arsenic (as As) | 0.0001% max | 0.0001% max | 0.0001% max |
Heavy Metals (as Lead) | - | 0.0005% max | 0.0005% max |
pH | 4.0~4.6 | 4.0~4.6 | 4.0~4.6 |
Water Insoluble | 0.05% max | 0.05% max | 0.05% max |
*If you need other performance indicators or have special requirements, please contact with the company personnel.
Packaging & Storage:
Packed in 25kg pp/pe bags.
Shored at cool, dry and well ventilated place. Do not expose to moist air and sunshine.