DICALCIUM PHOSPHATE

1. CHEMICAL NAME: DICALCIUM PHOSPHATE DIHYDRATE

2. FORMULAR: CaHPO₄.2H₂O

3. MOLECULAR WEGHT:172.09

4. SPECIFITY:

White, monoclinic crystalline powder; soluble in dilute Hydrochloric, Nitric and acetic acids, slightly soluble in water , insoluble in ethanol, when heated to 75 , it may lose crystal water, convert to Anhydrous.

5. Quality standard:

Name of index	HG3257-1990		According to the contract ZA2002
	Fine grade	Grade1
Stability	Accord with the test		Accord with the test
PH value(20% turbid liquid)	7.6-8.3	7.6-8.3	6.9-8.1
Loss on ignition,%	24.5-26.5	24.5-26.5	24.5-26.5
Carbonate	Accord with the test	Accord with the test	Accord with the test
Fineness(passing through 45Umtest sieving), %	97.0	95.0	99.0
Sulfides	Accord with the test	Accord with the test	Accord with the test
Chlorides(Cl), %	0.03	0.03	0.03
Absorptive water capacity(ml/20g)	5.0-6.5	4.5-6.5	4.5-6.5
Content( As CaO)%	32.0-33.0	31.5-33.0	31.4-32.9
As, %	0.0005	0.0001	0.0001
Heavy metals(As Pb), %	0.003	0.001	0.001
Fluoride (As F), %	0.005	0.005	0.005
Degree of whiteness,	95	95	95
P2O5,%			40.7-42.5
Content,%			98.5 min
60 D.C. Water Loss			0.6 pct. max
Titration value			57-61ml
Set Test			Pass Test
Acid Insolubles,%			0.2 max

6. USES:

In daily chemical industry, it is used as frictional agent for making top quality tooth paste, especially foaming type tooth paste.

7. PACKING:

25kgs net paper bags or 25kgs or 1000kgs plastic woven bags

8. STORAGE and transport:

It should be stored in a dry, Ventilative and clear warehouse; kept away from moisture and hot, Furthermore, it should be stored separately from poisonous substances