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UREA |
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MOLECULAR FORMULA :CH4N2O MOLECULAR WT: 60.1 CASNO.57-13-6 |
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DESCRIPTION: WHITE,
CRYSTALLINE POWDER OR TRANSPERENT |
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GRADE |
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SPECIFICATION: |
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IP |
BP |
USP |
ACS |
AR |
LR |
FCC |
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IDENTIFICATION |
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TO COMPLY |
TO COMPLY |
TO COMPLY |
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ALKALINITY |
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TO COMPLY |
TO COMPLY |
--- |
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AMMONIUM |
MAX. |
--- |
500PPM |
--- |
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SOLUBILITY |
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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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ASSAY ON DRY BASIS |
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99.0-101.0% |
98.5-101.5% |
99.0-100.5% |
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99.5%(MIN) |
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BIURET |
MAX. |
0.1% |
0.1% |
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0.05% |
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HEAVY METALS |
MAX. |
20PPM |
10PPM |
0.002% |
0.001% |
0.0002% |
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LOSS ON DRYING |
MAX. |
1.0% AT 1050C |
1.0% AT 100-1050C |
--- |
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SULPHATED ASH |
MAX. |
0.1% |
0.1% |
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0.1% |
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ETHANOL-INSOLUBLE MATTER |
MAX. |
0.04% |
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0.04% |
--- |
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RESIDUE ON IGNITION |
MAX. |
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0.1% |
0.01% |
0.010% |
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CHLORIDE |
MAX. |
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0.007% |
5PPM |
0.0005% |
0.007% |
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MELTING RANGE |
MAX. |
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132O-135OC |
132O-135OC |
132O-135OC |
1320-1330C |
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IRON |
MAX. |
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--- |
0.001% |
0.0001% |
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SULPHATE |
MAX. |
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0.01% |
0.001% |
0.001% |
100PPM |
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INSOLUBLE MATTER |
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0.01% |
0.003% |
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OTHER REQUIREMENTS |
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TO COMPLY |
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FREE ACID |
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0.05 ML N/1% |
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FREE ALKALI |
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0.05 ML N/1% |
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