Mono Calcium Phosphate
Calcium Dihydrogen Phosphate
- CAS
- 7758-23-8
- EC
- 231-837-1
- Food Code
- E341(i)
- Sectors
- Food & Nutrition, Animal Nutrition, Agriculture
Mono Calcium Phosphate (CAS 7758-23-8) is a Food Grade calcium phosphate, also known as calcium dihydrogen phosphate, supplied as a white crystalline powder that works as a fast-acting leavening agent in baking powders and as a calcium and phosphorus fortifier in foods and feed. This Food Grade phosphate is highly soluble in water (18 g/100 mL at 30°C), giving a slightly acidic solution of pH 3-4.
Its primary role is as a fast-acting leavening agent in baking powders and self-raising flours, where it reacts with sodium bicarbonate to release carbon dioxide. It also serves as a calcium and phosphorus fortifier in beverages, dairy products, and dietary supplements.
In animal nutrition, MCP is a highly bioavailable feed phosphate supporting bone development and growth in poultry, swine, and aquaculture. The compound is obtained by reacting calcium carbonate with phosphoric acid and is hygroscopic, so dry storage is essential.
Typical Properties
| Molecular formula | Ca.2H3O4P |
|---|---|
| Molecular weight | 234.05 g/mol |
| Appearance | white crystalline powder |
| Form | Crystals |
| Odor | Odorless |
| Melting point | 109 °C |
| Boiling point | 203 °C (decomposes) |
| Density | 2.220 g/cm³ @ Temp: 18 °C |
| Water solubility | insoluble |
| GHS signal word | Danger · Corrosive |
| HS code | 31031010 |
| Grades available | Food Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Mono Calcium Phosphate
Applications
Used as leavening agent in baked goods for gas production; nutrient fortifier in foods providing calcium/phosphorus; pH control in beverages and dairy; animal feed additive for bone health and growth; fertilizer for soil acidification and phosphorus supply; in pharmaceuticals as excipient.
Safety & Risks
Nonhazardous per GHS but avoid dust causing eye/respiratory irritation; prolonged exposure may lead to skin dryness. Low toxicity LD50 oral (rat) >5000 mg/kg; non-combustible but decomposes to phosphorus oxides at high heat. Incompatible with strong bases; use PPE, ventilate; no carcinogenic effects.
Packaging
Typically in 25kg multi-wall paper bags with PE liners or 50kg fiber drums to prevent moisture; store tightly closed in cool, dry areas; empty containers retain residue—do not reuse, dispose per local regulations.