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Sodium Meta Bisulphite |
SODIUM   METABISULPHITE (Na2S2O5),  
M.W. : 190.10 g / mol. CAS No. 7681-57-4 |
SPECIFICATION |
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 Na2S2O5 |
96.0 % Min. W/W. |
PH of 10% Solution |
3.5 to 5.5 at room temp. |
Thiosulphate containt |
0.1 % 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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