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1,Formula Ca3(PO4)2 ; Ca5OH(PO4)3; Ca10(OH)2(PO4)6
2,Formula wt Ca3(PO4)2 310.18
Formula wt Ca5OH(PO4)3 502.31
Formula wt Ca10(OH)2(PO4)6 1004.61
3,CAS: [7758-87-4]; CAS: [1306-06-5]; CAS: [62974-97-4]
4,Specificity: Mixture of different phosphorus calcium, white powder, odorless, tasteless, relative density 3.18,difficultly soluble in water, easily soluble in dilute hydrochloric acid, nitric acid, steady in air.
5,Packing: 25kg net paper bag or 1mt big bag with PE liner.
Name of index |
FCC-V |
E 341（iii） |
Assay (On the ignited basis),≥% |
34.0-40.0(as Ca) |
90 |
P2O5 Content(on the Anhydrous basis) ,% |
-- |
38.5--48.0 |
Description |
White floating crystalline powder |
a white, odourless powder which is stable in air |
Identification |
-- |
Positive tests for calcium and for phosphate |
Solubility tests |
-- |
Practically insoluble in water, insoluble in ethanol soluble in dilute hydrochloric and nitric acid |
Arsenic ,≤mg/kg |
3 |
3 |
Fluoride, ≤mg/kg |
75 |
50 |
Lead,≤mg/kg |
2 |
4 |
Cadmium, ≤mg/kg |
-- |
1 |
Mercury, ≤mg/kg |
-- |
1 |
Loss on ignition, (After ignition at 800℃±25℃, to constant weight) ≤% |
10.0 |
8 |
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