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SODIUM
METABISULPHITE |
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MOL.FORMULA:Na2S2O5 MOL.WT: 190.1 CAS NO. 7681-57-4 |
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DESCRIPTION: A WHITE OR ALMOST WHITE, CRYSTALLINE POWDER OR COLOURLESS |
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GRADES |
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SPECIFICATION |
IP |
BP |
USP |
ACS |
AR |
LR |
F.C.C |
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IDENTIFICATION |
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TO COMPLY |
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TO COMPLY |
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ARSENIC |
MAX |
4PPM |
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ACIDITY |
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TO COMPLY |
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SOLUBILITY |
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TO COMPLY |
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HEAVY METALS |
MAX |
20PPM |
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20PPM |
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IRON |
MAX. |
40PPM |
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40PPM |
10PPM |
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LEAD |
MAX |
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2PPM |
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SELENIUM |
MAX |
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5PPM |
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ASSAY |
MAX |
95.0-100.5% |
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90% MIN |
90-100.5% |
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CHLORIDE |
MAX |
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500PPM |
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THIO SULPHATE |
MAX |
TO COMPLY |
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