CAS number： 7757-93-9
Molecular formula： CaHPO4
molecular weight： 136.0593
Chemical structure：
DCPA
| ITEM | STANDARD |
| Content (CaHPO4) | 98.0-105.0% |
| Pb | 0.0002%max |
| Heay metals(As Pb) | 0.0015%max |
| As | 0.0003%max |
| Loss on ignition(800℃) | 6.6-8.5 |
| Sulphate as SO4 | 0.5% max |
| Fluorides | 0.005%max |
| Chloride as CL | 0.25%max |
| Acid-insoluble Substances | 0.02%max |
| Content (CaHPO4) | 98.0-105.0% |
| Pb | 0.0002%max |
DCPD
| ITEM | STANDARD |
| CONTENT(CaHPO4.2H2O) | 98.0-105.0% |
| APPEARANCE | WHITE POWDER |
| ARSENIC( AS) | 2PPM MAX |
| LOSS ON DRYING | 24.5-26.5% |
| HEAVY METAL( PB) | 30PPM MAX |
| FLUORID | 10PPM MAX |
| Pb | 2PPM |
Details
Dicalcium Phosphate Anhydrous:
White and odorless powder; it is soluble in diluted Hydrochloric Acid, Nitric Acid and Acetic Acid; slightly soluble in water but insoluble in Ethanol; stable in air; its relative density is: 2.32.
Dicalcium Phosphate Dihydrate:
White monoclinic crystal powder; odorless and colorless; it is soluble in diluted Hydrochloric Acid, Nitric Acid and Acetic Acid; slightly soluble in water but insoluble in Ethanol; its relative density is 2.32; stable in air; it will lose crystal water when heated to 75℃ and then convert to Dicalcium Phosphate Anhydrous.
In food industry, it is used as leavening agent, dough modifier, buffer, nutritional supplement, emulsifier, and stabilizer e.g. it is applied as leavening agent for flour, cake, pastry, bakery, as quality modifier for bread, and fried food. Also be applied in biscuit, milk powder, drinks, ice cream as nutrient supplement or quality improver. In pharmaceutical industry, it is often used as an additive in the producing of Calcium Tablet or other tablets. In daily chemical industry-toothpaste, it is used as friction agent.
