SYNONYM: DICALCIUM HYDROGEN PHOSPHATE DIHYDRATE;
CALCIUM PHOSPHATE DIBASIC DIHYDRATE;
CALCIUM MONOHYDROGEN PHOSPHATE DIHYDRATE.
FORMULA: CaHPO4·2H2O
M. W.: 172.09
CAS NO.: 7789-77-7
GRADE: DENTAL GRADE
DESCRIPTION: WHITE PULVERIZED POWDER, ODOURLESS, TASTELESS.
SOLUBLE IN DILUTE HYFROCHLOIC, NITRIC AND ACETIC ACID, SLIGHTLY SOLUBLE IN
WATER, INSOLUBLE IN ETHANOL,WHEN HEATED TO 75℃, IT MAY LOSE CRYSTAL
WATER, CONVERT TO ANHYDROUS.
SPECIFICATIONS:
|
PH VALUE (20% SOLUTION) |
6.9-7.8 |
|
FINENESS (PASSING 325 MESH
SIEVE) |
99% MIN. |
|
STABILITY |
PASS TEST |
|
LOSS ON IGNITION (800℃) |
24.5-26.5 |
|
CARBONATE (AS CO3) |
PASS TEST |
|
SULFIDES (AS S) |
NO |
|
CHLORIDE (AS Cl) |
0.030% MAX. |
|
ABSORPTIVE WATER (ml/20g) |
5.0-6.5 |
|
CaO |
32%-33% |
|
ARSENTIC (AS As) |
0.0008% MAX. |
|
HEAVY METALS (AS Pb) |
0.0030% MAX. |
|
FLUORIDE (AS F) |
0.005% MAX. |
|
WHITENESS |
95 MIN. |
|
LOSS WATER (60℃) |
0.6% MAX. |
|
DENSITY (g/ml) |
0.8-1.00 |
USES: WIDELY USDE AS POLISHING AGENT IN DENTIFRICE.
PACKING: PACKED
IN 25KG OR 50KG PLASTIC WOVEN BAG.