Calcium Hydrogen Phosphate (DCP) – CAS No. 7757-93-9
Product Overview
Calcium Hydrogen Phosphate (DCP), also known as Dicalcium Phosphate, with the chemical formula CaHPO₄ and CAS Number 7757-93-9, is a versatile calcium and phosphorus compound essential for nutritional fortification, animal feed, and industrial applications. This white, odorless crystalline powder or granular material offers low water solubility (0.02 g/100 mL at 25°C) and a neutral pH of 6.0-7.5 in 10% solution, making it an ideal non-hygroscopic source of bioavailable minerals without contributing to unwanted acidity or moisture absorption. With a purity ≥98%, DCP provides approximately 29% calcium and 41% phosphorus pentoxide, supporting bone health, enamel strengthening, and structural integrity in formulations. Its insolubility ensures controlled release in digestive systems, enhancing nutrient uptake efficiency.
Key benefits of Calcium Hydrogen Phosphate include:
- Bioavailable Minerals: Delivers essential calcium and phosphorus in a 1:1 molar ratio, optimizing absorption for health and growth.
- Anti-Caking Properties: Remains free-flowing in dry blends, preventing clumping in powders and feeds.
- Neutral pH Stability: Compatible with sensitive matrices like foods and pharmaceuticals without flavor or texture disruption.
- Cost-Effective Fortification: High mineral density reduces required dosages while meeting regulatory nutrition labels.
- Regulatory Safety: GRAS by FDA (INS 341(ii)), suitable for food, feed, and cosmetic grades with low heavy metal content.
DCP is manufactured through wet or dry processes involving phosphoric acid and calcium hydroxide, yielding dihydrate (CaHPO₄·2H₂O) or anhydrous forms compliant with FCC and USP standards.
Technical Specifications
| Property | Value/Description |
|---|---|
| Chemical Formula | CaHPO₄ (anhydrous) |
| CAS Number | 7757-93-9 |
| Molecular Weight | 136.06 g/mol (anhydrous) |
| Appearance | White crystalline powder/granules |
| Purity | ≥98% |
| Calcium (Ca) | 22-24% (as Ca) |
| Phosphorus (P₂O₅) | 40-42% |
| pH (10% Solution) | 6.0-7.5 |
| Solubility in Water | 0.02 g/100 mL at 25°C |
| Density | 2.31 g/cm³ |
| Loss on Ignition | ≤24.5% (dihydrate) |
| Storage | Cool, dry place; avoid humidity |
These specifications ensure DCP’s reliability in nutritional and manufacturing contexts.
Applications
Food and Beverage Industry
- Nutritional Fortification: Added at 0.5-2% to cereals, flours, and beverages as a calcium source, boosting daily intake without altering taste or solubility.
- Baked Goods and Dairy: Acts as a dough conditioner and anti-caking agent in powdered milks and breads, improving volume and shelf stability.
- Supplements: Base for effervescent tablets and chewables, providing sustained mineral release.
Animal Feed and Agriculture
- Livestock Nutrition: Incorporated at 1-5% in premixes for poultry, swine, and ruminants to balance Ca:P ratios, enhancing bone density and milk production.
- Aquafeed: Granular form for fish and shrimp feeds, promoting skeletal growth in intensive aquaculture.
Pharmaceuticals and Personal Care
- Tablet Excipients: Binder and diluent in compressed tablets, offering compressibility and disintegration control.
- Oral Care Products: Mild abrasive in toothpastes at 20-50% for polishing without enamel wear, combined with fluorides for remineralization.
Why Choose Our DCP?
Our Calcium Hydrogen Phosphate is derived from high-purity reagents with fluoride <10 ppm and lead <2 ppm, ensuring exceptional whiteness and flowability. Feed millers achieve 15% better pellet durability, while food formulators note improved fortification uniformity. Available in food/feed/pharma grades, packaged in 25kg bags, 1000kg supersacks, or 50kg drums, including micronized powders for enhanced dispersibility and certifications like Kosher, Halal, and GMP.
Frequently Asked Questions (FAQs)
What is Calcium Hydrogen Phosphate (DCP)?
Calcium Hydrogen Phosphate (DCP) is a calcium phosphate salt with formula CaHPO₄ and CAS 7757-93-9, used as a mineral supplement in foods, feeds, and pharma. It’s a white, insoluble powder providing balanced calcium and phosphorus for nutritional enhancement.
How is DCP used in animal feed formulations?
DCP is blended at 2-4% into complete feeds to maintain a 2:1 Ca:P ratio; its low solubility prevents rapid leaching, supporting gradual absorption in monogastrics and ruminants alike.
Is DCP safe for human consumption?
Yes, DCP is FDA GRAS and EFSA-approved for food use up to 2.5% in dry mixes, with high bioavailability and no toxicity concerns at recommended levels for calcium fortification.
What is the shelf life of DCP?
In sealed, dry storage conditions below 40°C, DCP remains stable for 2-3 years, resistant to hydration and maintaining full mineral potency without degradation.
Can DCP be combined with other minerals?
DCP pairs effectively with magnesium oxide or zinc sulfate in premixes but avoid excess iron to prevent precipitation; it’s ideal for multi-mineral supplements after solubility testing.
Does DCP affect the texture of food products?
DCP’s insolubility and neutral pH contribute to smooth textures in powders and tablets, acting as an anti-caking agent without grittiness in low-moisture applications.
What packaging options are available for DCP?
We provide 25kg moisture-proof paper bags, 50kg HDPE drums, and 1000kg bulk big bags, all palletized for secure handling and international export.
For dosage recommendations, grade selections, or custom granulations, our team offers expert guidance.
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