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MAGNESIUM SULPHATE HEPTAHYDRATE |
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MOL.FORMULA:MgSO4.7H20 MOL.WT:246.48 CAS NO. 10034-99-8 |
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DESCRIPTION: WHITE EFFLORESCENT |
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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 |
TO COMPLY |
TO COMPLY |
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TO COMPLY |
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SOLUBILITY |
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TO COMPLY |
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TO COMPLY |
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APPEARANCE OF SOLUTION |
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TO COMPLY |
TO COMPLY |
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ACIDITY &ALKALINITY |
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TO COMPLY |
TO COMPLY |
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FREE ALKALI (MgO) |
MAX |
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0.001% |
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FREE ACID (H2S04) |
MAX |
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0.0025% |
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CHLORIDE |
MAX. |
300PPM |
300PPM |
0.014% |
5PPM |
0.0002% |
200PPM |
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ARSENIC |
MAX |
2PPM |
2PPM |
3PPM |
2PPM |
0.00004% |
5PPM |
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HEAVY METALS |
MAX |
10PPM |
10PPM |
0.001% |
5PPM |
0.0005% |
10PPM |
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ZINC |
MAX |
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0.0005% |
10PPM |
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IRON |
MAX |
200PPM |
20PPM |
0.5PPM |
5PPM |
0.0001% |
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LOSS ON IGNITION |
MAX |
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40–52% |
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48-52% |
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LOSS ON DRYING |
MAX |
48-52% |
48-52% |
2% |
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ASSAY |
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99-100.5% |
99-100.5% |
99-100.5% |
98-102% |
99.5–103% |
99.00% |
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PH OF 5% SOLN |
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5-9.2 |
5-8.2 |
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ORGANIC VOLATILE IMPURITIES |
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TO COMPLY |
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SELENIUM |
MAX |
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0.003% |
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INSOLUBLE MATTER |
MAX |
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0.005% |
0.003% |
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NITRATE |
MAX |
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0.002% |
0.001% |
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AMMONIUM |
MAX |
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0.002% |
0.002% |
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CALCIUM |
MAX |
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0.02% |
0.005% |
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MANGANESE |
MAX |
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5PPM |
0.0005% |
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POTASSIUM |
MAX |
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0.005% |
0.005% |
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PHOSPHATE |
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0.0005% |
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SODIUM |
MAX |
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0.005% |
0.005% |
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STRONTIUM |
MAX |
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0.005% |
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