MONOPOTASSIUM PHOSPHATE
1,Formula : KH2PO4
2,Formula wt: 136.09
3,CAS: [7778-77-0]
4,Einecs: 231-913-4
5,Specificity: Odorless, colorless crystals or white granular or crystalline powder, hygroscopic, steady in air; relative density 2.338,melting point 96℃-253℃,easily soluble in water (83.5g/100ml,90℃),PH4.2-4.8 in 1% aqueous solution. Insoluble in ethanol.
6,H.S. Code: 28352400 CIQ Checking: Non Statutory Inspection
Name of index |
|
FCC-V |
E340(i) |
USP-30 |
Description |
|
Odourless, colourless crystals or white granular or crystalline powder |
||
Solubility |
|
-- |
Freely soluble in water. Insoluble in ethanol |
-- |
Identification |
|
Pass test |
Pass test |
Pass test |
pH of a 1 % solution |
|
-- |
4.2—4.8 |
-- |
Content(as dry base) |
% |
≥98.0 |
98.0 (105℃,4h) |
98.0-100.5 (105℃,4h) |
P2O5 Content(Anhydrous basis) |
% |
-- |
51.0 –53.0 |
-- |
Water insoluble(Anhydrous basis) |
≤% |
0.2 |
0.2 |
0.2 |
Organic volatile impurities |
|
-- |
-- |
Pass test |
Fluoride |
≤ppm |
10 |
10(expressed as fluorine) |
10 |
Loss on drying |
≤% |
1 |
2 (105℃,4h) |
1 (105℃,4h) |
Heavy metals |
≤ppm |
-- |
-- |
20 |
As |
≤ppm |
3 |
1 |
3 |
Cadmium |
≤ppm |
-- |
1 |
-- |
Mercury |
≤ppm |
-- |
1 |
-- |
Lead |
≤ppm |
2 |
1 |
5 |
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