Customization: | Available |
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CAS No.: | 7789-77-7 |
Formula: | Cahpo4&2H2O |
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Name of indexes | GB1889-2004 | FCC-V | USP-32 | E 341 (ii) |
Appearance | White powder | White powder | White powder | White granular powder or powder |
Assay (as CaHPO4.2H2O),% | 98.0-103.0 | 97.0-105.0 | 98.0-105.0 | 98.0-102(200ºC, 3hours) |
P2O5(on the anhydrous basis),% | - | - | - | 50.0 - 52.5 |
Identification | - | - | - | Positive tests for calcium and for phosphate |
Fluoride, ≤% | 0.005 | 0.005 | 0.005 | 0.005 |
Loss on ignition, % | 24.5-26.5 | 24.5-26.5 | 24.5-26.5 | ≤26.5(800 °C ± 25 °C , 30 minutes) |
Heavy metals(as Pb), ≤% | 0.001 | - | 0.003 | - |
Pb, ≤% | 0.0005 | 0.0002 | - | 0.0001 |
As, ≤% | 0.0002 | 0.0003 | 0.0003 | 0.0001 |
Aluminium,≤ mg/kg | - | - | - | 200 |
Insoluble in Acid ≤% | 0.05 | - | 0.2 | - |
Chloride ≤% | - | - | 0.25 | - |
Sulphate ≤% | - | - | 0.5 | -- |