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CALCIUM SULPHATE DIHYDRATE |
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MOL.FORMULA: CaSO4.2H2O MOL.WT: 172.17 CAS
NO. 10101-41-4 |
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DESCRIPTION: A
WHITE, FINE POWDER, VERY SLIGHTLY SOLUBLE IN WATER, PRACTICALLY INSOLUBLE IN
ALCOHOL. |
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GRADES |
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SPECIFICATION |
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IP |
BP |
USP |
ACS |
AR |
LR |
F.C.C |
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IDENTIFICATION |
|
|
TO COMPLY |
TO COMPLY |
|
|
TO COMPLY |
TO COMPLY |
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ACIDITY OR ALKALINITY |
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|
TO COMPLY |
|
|
|
|
|
|
CHLORIDES |
MAX |
|
300PPM |
|
0.005% |
0.002% |
400PPM |
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ARSENIC |
MAX |
|
10PPM |
|
|
0.00004% |
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|
|
HEAVY METALS |
MAX |
|
20PPM |
0.001% |
0.002% |
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|
|
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LOSS ON IGNITION @8000C |
|
|
18.0-22.0% |
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|
|
|
|
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IRON |
MAX |
|
100PPM |
0.01% |
0.001% |
0.0005% |
50PPM |
|
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ASSAY |
|
|
98.0-102.0% |
98-101% |
98-102% |
99.0%
(MIN) |
98.0%
(MIN) |
98.0%
(MIN) |
|
CARBONATES |
MAX |
|
|
|
TO COMPLY |
0.1% |
TO COMPLY |
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ACID INSOLUBLE MATTER |
MAX |
|
|
|
0.02% |
0.01% |
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FREE ACID |
MAX |
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|
|
|
0.01% |
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|
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NITRATE |
MAX |
|
|
|
0.005% |
0.002% |
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|
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LEAD |
MAX |
|
|
|
|
0.001% |
|
2PPM |
|
MAGNESIUM |
MAX |
|
|
|
|
0.01% |
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|
|
POTASSIUM |
MAX |
|
|
|
|
0.01% |
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|
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SODIUM |
MAX |
|
|
|
|
0.01% |
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MAGNESIUM & ALKALI SALTS |
MAX |
|
|
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0.3% |
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|
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FLUORIDE |
MAX |
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|
|
|
|
|
0.003% |
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SELENIUM |
MAX |
|
|
|
|
|
|
0.003% |
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LOSS ON DRYING AT 2500C |
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|
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19-23% |
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19.0-23.0% |