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Sodium Metabisulfite [Na2S2O5] [CAS_7681-57-4] NF/ Food and Photo Grade 97+% for Sale, White / Slightly Yellow Crystal Powder (50 Lb Bag
$ 165.00 $ 191.00
| Wintersun code: | 19-032ES |
| CAS Number: | 7681-57-4 |
| Molecular Formula: | Na2S2O5 |
| Molecular Weight: | 190.1g/mol |
Applications
Reducing agent for chemical manufacturing. Preservative. Auxiliary for water treatment film and photographic industry. Bleaching agent. Ensiling agent.
Sales Specification
- Appearance: White or slightly yellow crystal powder
- Assay (Na2S2O5): 97% Min
- Insoluble in water: 0.03% Max
- Arsenic: 0.002% as Max
- Heavy Metal as Pb: 0.002%
- Iron: 0.003% Max
- pH: 4.0-4.6
Packing
50 lb bag
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