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Properties: White crystal powder
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Applications: Mainly used in tannage, tanning, and bleacher for botanical fibre, also as reducer in industrial production.
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Packing: in bag
25kg/.
Na2SO3
Molecular Formula: Na2SO3
HG/T2967-2000
Exercised standard: HG/T2967-2000
/Item | /Specification | 2006 /Average level in 2006 | |
/Excellent class | /First class | ||
Na2SO3,% ≥ Sodium Sulphite(Na2SO3) | 97.0 | 96.0 | 97.72 |
Fe,% ≤ Iron Content(Fe) | 0.003 | 0.005 | 0.0021 |
,% ≤ Water insoluble matter /% | 0.02 | 0.03 | 0.004 |
Na2CO3,% ≤ Free AlkaliNa2CO3,% | 0.10 | 0.40 | 0.27 |
Na2SO4,% ≤ Sodium SulphateNa2SO4,% | 2.5 |
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NaCl,% ≤ Sodium Chloride (as NaCl) | 0.10 |
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sodium sulphite