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Sodium Thiosulphate Anhydrous
SODIUM THIOSULPHATE ANHYDROUS (Na2S2O3), M.W. : 158 g/mol.11 CAS No. 7772-98-7, Sodium Thyposulphite
Physical Appearance White free flowing  powder Free from lunps and externals visibal impurities.
Appearance of Solution A 20% solution in distilled water should be clear and colourless
Assay as Na2S2O3 97.0% Min. W/W.
PH of 10% Solution 6.5 to 8.5 at room temp.
Sulphide as Na2S 0.002% Max.
Insolubels mater as Ca, Mg and NH4OH 0.4 % Max.
Iron as Fe 0.005 % Max.
Heavy Metals as Pb 0.005% Max.
Packing 25kg / 50kg / 50Lb

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