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POTASSIUM SULPHATE |
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MOL FORMULA:K2SO4 MOL WT:174.27 CAS NO.7778-80-5 |
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DESCRIPTION:
WHITE COLOURLESS |
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GRADES |
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SPECIFICATIONS |
IP |
BP |
USP |
ACS |
AR |
LR |
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IDENTIFICATION |
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TO COMPLY |
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SOLUBILITY |
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-- |
TO COMPLY |
-- |
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APPEARANCE OF 10% SOLUTION |
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CLEAR & COLOURLESS |
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CHLORIDE |
MAX |
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40PPM |
-- |
0.001% |
0.0005% |
500PPM |
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IRON |
MAX |
-- |
10PPM |
-- |
5PPM |
0.0005% |
10PPM |
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LEAD |
MAX |
-- |
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-- |
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SODIUM |
MAX |
-- |
0.10% |
-- |
0.02% |
0.03% |
1% |
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ASSAY AS K2SO4 |
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-- |
98.5-101% |
-- |
99.00%(MIN) |
99.5%(MIN) |
99% |
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INSOLUBLE MATTER |
MAX |
-- |
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-- |
0.01% |
0.003% |
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PH OF 5% SOLUTION |
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-- |
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-- |
5.5-8.5 |
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5.5-7.5 |
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ACIDITY & ALKALINITY |
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TO COMPLY |
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NITROGENOUS COMPOUNDS |
MAX |
-- |
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-- |
5PPM |
0.0005% |
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CALCIUM & MAGNESIUM |
MAX |
-- |
200`(Ca) |
-- |
0.02% |
0.0065% |
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MAGNESIUM |
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20PPM |
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HEAVY METALS |
MAX |
-- |
20PPM |
-- |
5PPM |
0.0005% |
30PPM |
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FREE ACID (H2SO4) |
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0.0025% |
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FREE ALKALI |
MAX |
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0.05ml N/1 % |
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ARSENIC |
MAX |
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2PPM |
0.00004% |
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LOSS ON DRYING AT 1300C |
MAX |
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1.0% |
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