FINISHED PRODUCT SPECIFICATION
QCD.F.054
Name of Product : SODIUM METABISULPHITE
Chemical Formula : Na2S2O5 Effective Date : 22/11/2016
Molecular Weight : 190.10 g/mol Retest Date : After 3 Year
CAS No. : 7681-57-4 Master Copy : Quality Control
Specification : Confirmed as IP
Product Code : FP042004
HSN Code : 28321090
Department : Quality Control Page No. : 01 of 01
NO. TEST SPECIFICATION
1. DESCRIPTION COLOURLESS, PRISMATIC CRYSTALS OR WHITE OR CREAMY
WHITE POWDER, ODOUR SULPHUROUS
2. SOLUBILITY FREELY SOLUBLE IN WATER, SLIGHTLY SOLUBLE IN ETHANOL
(95%)
3. IDENTIFICATION TEST (A & B) SODIUM = +VE & SULPHATE = +VE
4. ACIDITY A SOLUTION IS ACIDIC TO PHENOL RED SOLUTION
5. ARSENIC MAX. 0.004%
6. HEAVY METALS Max.0.002 %
7. IRON Max.0.004 %
8. THIOSULPHATE As Per IP
9. RESIDUAL SOLVENT As Per IP
10. ASSAY 95.0 % - 100.5% OF Na2S2O5
Storage : Store protected from light, Keep containers tightly closed..
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