| CAS No.: | 7681-57-4 |
|---|---|
| Formula: | Na2s2o5 |
| EINECS: | 231-673-0 |
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Iterms |
Standards |
Result |
| NA2S2O5 CONTENT % | 97 MIN | 97.5 |
| HEAVY METALS (AS PB) : % | 0.0005%MAX | 0.0002 |
| (AS) % | 0.0002%MAX | 0.00008 |
| IRON (FE) : % | 0.002%MAX | 0.0015 |
| WATER INSOLUBLE % | 0.05%MAX | 0.01 |
| CHLORIDE : % | 0.5% MAX | 0.09 |
| PH VALUE : | 4.0-4.5 | 4.4 |
CONCLUSION |
QUALIFIED |
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Chemical industry
It is used for the production of insurance powder, sulfamethazine, analgin, caprolactam, etc., phenylpropane sulfone and benzaldehyde. The photographic industry is used as a fixative for the fixer. The perfume industry is used to produce vanillin. Used as a preservative for brewing industry, a rubber coagulant and a bleaching agent for cotton bleaching. Organic intermediates, dyes, and tanning are used as reducing agents for electroplating, wastewater treatment in oil fields, and as a mineralizer for mines.
industry
It is used in printing and dyeing, organic synthesis, printing, tanning, pharmaceutical and other departments; as a preservative, bleaching agent and loosening agent in food processing.
Used as a chemical reagent
(Printing and dyeing, photography, etc.), used as bleach mordant, reducing agent rubber coagulant, also used in organic synthetic pharmaceuticals and spices.
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Product Name
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Sodium Metabisulfite
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Appearance
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White powder
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Formula
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Na2S2O5
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CAS No.
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7681-57-4
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HS CODE
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2832100000
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Storage
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Store in a segregated and approved area
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Usage
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Leather Treatment/Dyeing and Painting industry/Antiseptic/Bleach/loose agent
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