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POTASSIUM PHOSPHATE MONOBASIC |
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MOL.FORMULA:KH2PO4 MOL.WT:136.09 CAS NO.7778-77-0 |
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DESCRIPTION :
WHITE CRYSTALLINE POWDER OR COLORLESS |
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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 |
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SOLUBILITY |
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TO COMPLY |
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TO COMPLY |
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APPEARANCE OF SOLUTION |
MAX |
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CLEAR & COLOURLESS |
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TO COMPLY |
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pH OF 5% SOLN |
MAX |
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4.2-4.5 |
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4.1-4.5 |
4.3-4.5 |
4.2-4.5 |
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REDUCING SUBSTANCES |
MAX |
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TO COMPLY |
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CHLORIDE |
MAX |
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200PPM |
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0.001% |
0.0005% |
300PPM |
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SULPHATE |
MAX |
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300PPM |
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0.003% |
0.005% |
0.1% |
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ARSENIC |
MAX. |
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2PPM |
3PPM |
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5PPM |
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HEAVY METALS |
MAX |
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10PPM |
0.002% |
0.001% |
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20PPM |
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FLUORIDE |
MAX |
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0.001% |
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IRON |
MAX |
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10PPM |
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0.002% |
0.002% |
10PPM |
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SODIUM |
MAX |
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0.1% |
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0.005% |
0.05% |
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LOSS ON DRYING AT 125-1300C |
MAX |
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2.0% |
1.0% |
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0.05% |
2.0% |
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LOSS ON DRYING OVER SULPHURIC ACID |
MAX |
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0.2% |
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ASSAY ON DRY BASIS |
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98-100.5% |
98-100.5% |
99.0% (MIN) |
99.5%-100.5% |
98-101% |
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INSOLUBLE MATTER, Ca & AMMONIUM
HYDROXIDE PPT |
MAX |
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O.2% |
0.01% |
0.01% |
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NITROGEN COMPOUNDS |
MIN. |
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0.001% |
0.001% |
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CALCIUM |
MAX |
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0.01% |
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LEAD |
MAX |
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5PPM |
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0.0005% |
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CALCIUM & MAGNESSIM |
MAX |
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0.013% |
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AMMONIUM |
MAX |
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0.0025% |
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ORGANIC VOLATILE IMPURITIES |
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TO COMPLY |
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