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1,Formula :K2HPO4
2,Formula wt :174.18
3,CAS: [7758-11-4]
4,Einecs: 231-834-5
5, Specificity: Colorless or white granular powder, crystals or masses; deliquescent substance. Easily soluble in water, insoluble in ethanol. PH 8.7-9.4 of 1% aqueous solution.
6,H.S. Code: 28352400 CIQ Checking: Non Statutory Inspection
Name of index |
|
FCC-V |
E340(ii) |
USP-30 |
Description |
|
Colourless or white granular powder, crystals or masses; deliquescent substance, hygroscopic |
||
Solubility |
|
-- |
Freely soluble in water. Insoluble in ethanol |
-- |
Identification |
|
Pass test |
Pass test |
Pass test |
pH value |
|
-- |
8.7—9.4(1% solution) |
8.5--9.6(5% solution) |
Content(as dry base) |
% |
≥98.0 |
≥98.0 (105℃,4h) |
98.0-100.5 |
P2O5 Content(Anhydrous basis) |
% |
-- |
40.3--41.5 |
-- |
Water insoluble(Anhydrous basis) |
≤% |
0.2 |
0.2 |
0.2 |
Carbonate |
|
-- |
-- |
Pass test |
Chloride |
≤% |
-- |
-- |
0.03 |
Sulfate |
≤% |
-- |
-- |
0.1 |
Organic volatile impurities |
|
-- |
-- |
Pass test |
Fluoride |
≤ppm |
10 |
10(expressed as fluorine) |
10 |
Monobasic or tribasic salt |
|
-- |
-- |
Pass test |
Loss on drying |
≤% |
2 |
2 (105℃,4h) |
1 (105℃) |
Heavy metals |
≤ppm |
-- |
-- |
10 |
Sodium |
|
-- |
-- |
Pass test |
As |
≤ppm |
3 |
1 |
3 |
Iron |
≤ppm |
-- |
-- |
30 |
Cadmium |
≤ppm |
-- |
1 |
-- |
Mercury |
≤ppm |
-- |
1 |
-- |
Lead |
≤ppm |
2 |
1 |
-- |
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