Sodium Sulfite anhydrous Na2SO3
Quantity : one contai Price : FOB: $385/TON
Sodium Sulfite 97% 98%
Food Grade & Industrial Grade
is a soluble sodium salt of sulfurous acid (sulfite) with the chemical formula Na2SO3.It is a white crystal powder or granule that tastes salty with sulphur odor,
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CAS RN.: |
7757-83-7 |
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EINECS: |
231-821-4 |
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H.S.CODE: |
2832.1000.00 |
1. Chemical Analysis
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Component |
Range |
Typical |
|
Na2SO3 % |
≥ 97.0 % |
97.37% |
|
Fe % |
≤ 0.003% |
0.003% |
|
Water insoluble matter |
≤ 0.02% |
0.02% |
|
Na2CO3 |
≤ 0.10% |
0.10% |
|
Na2SO4 |
≤ 2.5% |
2.5% |
2. Application
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Pulp and paper industry |
Lignin removal agent |
|
Water treatment |
Oxygen scavenger agent. |
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Photographic industry |
To protect developer solutions from oxidation and (as hypo clear solution) to wash fixer (sodium thiosulfate) from film and photo-paper emulsions. |
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Textile industry |
Bleaching, desulfurizing and dechlorinating agent |
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Chemical manufacturing |
Sulfonation and sulfomethylation agent. It is used in the production of sodium thiosulfate. |
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Leather trade |
The sulfitization of tanning extracts |
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Other applications |
l froth flotation of ores l oil recovery l food preservatives l making dyes l It is used in the purification of TNT for military use. |
3. Transportation Information:
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