Anhydrous Sodium sulfite
Anhydrous Sodium sulfite /Sodium Sulphate Anhydrous
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COA For Sodium Sulfite based on Standard: GB1893-2008 |
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Items |
97% Purity |
96% Purity |
93% Purity |
|
Na2SO3 % |
≥ 97.0 |
≥96.0 |
≥93.0 |
|
Iron % |
≤ 0.003 |
≤0.005 |
≤0.02 |
|
Water Insoluble Matter % |
≤ 0.02 |
≤0.03 |
≤0.05 |
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Free Alkali ( sodium carbonate) % |
≤0.1 |
≤0.4 |
≤0.8 |
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Na2SO4 % |
≤2.5 |
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|
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NaCl % |
≤ 0.1 |
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1>Bleaching agent for paper pulps ;
2>Waste water treatment;
3>Reducing and sulphonating agent for chemical synthesis ;
4>Bleaching agent for textiles;
5>Colors stripper and deoxidization ;
6>Floating agent for mining industry;
7>Auxiliary chemical in tanning process .
