Calcium pyrophosphate (CAS 35405-51-7, Ca2P2O7) is a food-grade calcium phosphate salt used as a leavening acid, calcium fortifier, acidity regulator and polishing/abrasive agent. This grade complies with the Food Chemicals Codex (FCC).
Specifications (FCC)
| Parameter | Value |
|---|---|
| Appearance | White, tasteless, free-flowing powder |
| Assay (CaO basis), % Ca2P2O7 | 96% min |
| Loss on ignition (30 min / 800 °C) | 1.00% max |
| Heavy metals (as Pb) | 15 ppm max |
| Fluoride | 50 ppm max |
| Arsenic (As) | 3 ppm max |
| Lead | 2 ppm max |
| On the 200 mesh | 1% max |
| On the 325 mesh | 2% max |
Result: according with FCC.
Applications
- Food: leavening acid in baking powders, calcium fortification and acidity regulation.
- Oral care: mild abrasive/polishing agent and anti-tartar component in toothpastes.
- Nutrition: calcium and phosphorus source in supplements and speciality foods.
Storage and Packaging
Store sealed, cool and dry. Standard packaging: 25 kg bags with PE liner or as required.
FAQ
Is this grade FCC compliant? Yes – it is produced and tested according to Food Chemicals Codex requirements, with the specification above.
What is the difference between calcium pyrophosphate and dicalcium phosphate? Calcium pyrophosphate (Ca2P2O7) is the dehydrated, condensed form; dicalcium phosphate (CaHPO4) is the hydrated precursor with different solubility and leavening behaviour.
