Sodium Sulphite
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Description
GRADE | TECHNICAL GRADE | SUPERFINE GRADE |
CHEMICAL FORMULA | NaHSO3 | NaHSO3 |
CAS No. | 7631-90-5 | 7631-90-5 |
MOLECULAR WT. | 104.60 | 104.60 |
PURITY | ||
1) As SO2 CONTENT (by Iodometry method) |
60 to 62% | 62 to 64% |
2) As NaHSO3 (mol.wt.104) (by Oxidation method with H2O2 |
97.0% Min. | 98.0% Min. |
APPEARANCE | WHITE TO PALE CREAM COLOUR CRYSTALLINE POWDER. | WHITE/ OFF WHITE COLOUR CRYSTALLINE POWDER |
PH (5% Solution at 30°C) | 4.5 to 5.5 | 4.5 to 5.0 |
IRON (As Fe) | 150 PPM MAX | 50 PPM MAX |
HEAVY METALS (As Pb) | ------ | 0.1% MAX |
MATTER INSOLUBLE IN WATER (20% Solution in distilled water) | 0.1% MAX | 0.01% MAX |
PACKING | 50 KG BAG WITH LINER | 50 KG BAG WITH LINER |
USES | DYESTUFFS |
DYESTUFFS, |
TANNERIES | TANNERIES, | |
CHLORO ALKALI | CHLORO ALKALI | |
EFFLUENTS TREATMENT | EFFLUENTS TREATMENT | |
PHARMACEUTICALS |
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Sodium Sulphite