white crystallization powder, soluble in diluted hydrochloric acid and nitric acid, slightly soluble in water, insoluble in ethanol, begin to lose water and become anhydrous calcium hydrogen phosphate at 65C.
Quality standard:
( QB/T2477-2007)
Name of index
QB/T2477-2007
Assay%
98.5%
P2O5 %
40.5-42.0
CaO%
32.0%
Whiteness%
95.0
PH(20%)
7.0-8.1
Particle size(325 mesh) % (200mesh)
99 99.95
Apparent density
0.8-1.0g/ml
water adsorption
5.0-6.5ml/20g
Stability
Passed test
Fast test of stability of Fluorine ion %
0.9
Loss on ignition %
25.0-26.5
Loss on drying %
0.60
Heavy metals(as Pb) %
0.002
Flouride %
0.005
Chloride %
0.03
Sulfate
Passed test
Sulfide
Passed test
As %
0.0003
Carbonate
Passed test
Fe %
0.005
Titer ML
57.0-61.0
Insolubles in HCL %
0.2.
Total plate count <
100 cfu/g
Total Molds <
500 cfu/g
Pseudomonas Aeruginosa
None
Golden Staphylococcus
None
Faecal Coliform
None
Usage:
as friction agent to making high-grade toothpaste in daily-use chemicals.
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