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1,Formula :Na4P2O7
2,Formula wt: anhydrous 265.90
3,CAS: anhydrous [7722-88-5]
4,Einecs: 231-767-1
5,Specificity: Colourless or white crystals, or a white crystalline or granular powder, easily vaporize. It will loose water at 100℃. It will melt at 985℃, easily melt in water, can not melt in ethyl alcohol. Aqueous is alkalescence.
6,H.S. Code: 28352990 CIQ Checking: Non Statutory Inspection
Name of index |
|
FCC-V |
E450(iii) |
Description |
|
Colourless or white crystals, or a white crystalline or granular powder |
|
Identification |
|
Pass test |
|
Solubility |
|
-- |
Soluble in water. Insoluble in ethanol |
pH of a 1 % solution |
|
-- |
9.8-10.8 |
Assay (ignited basis) |
% |
95.0-100.5 |
≥95 |
P2O5 Content |
% |
-- |
52.5-54.0 |
Water insoluble |
≤% |
0.2 |
0.2 |
Fluoride |
≤% |
0.005 |
0.001(expressed as fluorine) |
Loss on Ignition |
≤% |
0.5 |
0.5(105℃,4h then 550℃30m) |
As |
≤mg/kg |
3 |
1 |
Cadmium |
≤mg/kg |
-- |
1 |
Mercury |
≤mg/kg |
-- |
1 |
Lead |
≤mg/kg |
4 |
1 |
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