Sodium Metabisulfite
CAS No.: 7681-57-4
Molecular Formula: Na₂S₂O₅
Molecular Weight: 190.10
Description:
Sodium metabisulfite is a white crystalline powder with antioxidant and preservative properties.
Main Applications:
Used as a preservative in food, bleaching agent, water treatment, and in photography.
Typical Properties:
|
Appearance: |
White crystalline powder |
|
Assay: |
≥98.5% |
|
NaCl content |
0.012%max |
|
Fe content |
0.0005%max |
|
As content |
0.00005%max |
|
Heave metal (Pb) |
0.00005%max |
|
Water-Insoluble |
0.005%max |
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