MONOSODIUM PHOSPHATE ANHYDROUS
1,Formula : NaH2PO4; NaH2PO4·H2O
2,Formula wt, anhydrous 119.98
Formula wt, monohydrate 137.99
3,CAS: anhydrous [7558-80-7]; CAS: monohydrate [10049-21-5]
4,Einecs: 231-449-2
5,Specificity: Odourless, colourless crystals or white granular or crystalline powder, hygroscopic, and melting point is at 190℃.Easily soluble in water, insoluble in ethanol.
6,H.S. Code: 28352200 CIQ Checking: Non Statutory Inspection
Name of index |
|
FCC-V |
E339(i) |
Description |
|
A white odourless, slightly deliquescent powder, crystals or granules |
|
Identification |
|
Pass test |
Pass test |
Solubility |
|
-- |
Freely soluble in water. Insoluble in ethanol or ether |
pH of a 1 % solution |
|
-- |
4.1—5.0 |
Content, |
% |
98.0—103 (as dry base) |
≥97,(60℃ 1h then 105℃ 4h) |
P2O5 Content |
% |
-- |
58.0-60.0(Anhydrous basis) |
Lead, |
≤mg/kg |
4 |
1 |
Water insolubles |
≤% |
0.2 |
0.2(Anhydrous basis) |
Fluoride |
≤% |
0.005 |
0.001 (expressed as fluorine) |
Loss on drying, |
|
1,Anhydrous ≤2.0% 2,Monohydrate:10.0-15.0%; 3,Dihydrate: 20.0-25.0% |
1,Anhydrous ≤2.0%, 2,Monohydrate ≤15.0%, 3,Dihydrate ≤25% (60℃ 1h then 105℃ 4h) |
As |
≤mg/kg |
3 |
1 |
Cadmium |
≤mg/kg |
-- |
1 |
Mercury |
≤mg/kg |
-- |
1 |
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