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Calcium phosphate dihydrate is used in the food industry as a loose agent for biscuits, dairy substitutes, and also as a dough improver and nutritional supplement. Calcium phosphate dihydrate is a source of calcium and phosphorus that also functions as a dough conditioner and bleaching agent. It functions as a dough conditioner in bakery products, as a bleaching agent in flour, as a source of calcium and phosphorus in cereal products, and as a source of calcium for alginate gels. It contains approximately 23% calcium. It is practically insoluble in water. It is also termed dibasic calcium phosphate, dihydrate and calcium phosphate dibasic, hydrous. It is used in dessert gels, baked goods, cereals, and breakfast cereals.
Items | Specifications | Results |
Appearance | White crystalline powder | |
Iron | NMT400PPM | ＜400PPM |
Loss on drying | NMT1.0% | 0.5% |
Nitrate | Blue color does not disappear | Complies |
Mesh size | 100 mesh | 70% pass 100mesh |
Conclusion | The product conforms to the above specifications. | |
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| Product parameters | |
| Cas number: | 7789-77-7 |
| Appearance: | White powder |
| Purity: | 98.0-105.0% |
| Package details: | 25kg/bag |
| Brand: | Fortunachem |
Calcium Phosphate Dibasic Dihydrate is a specific, crystalline form of calcium phosphate. Its name breaks down as follows:
Calcium Phosphate: A general term for compounds containing calcium ions (Ca²⁺) and phosphate ions (PO₄³⁻).
Dibasic: This indicates it has two replaceable hydrogen ions in its acid (phosphoric acid) structure. Its chemical formula is CaHPO₄.
Dihydrate: This means that within its crystal structure, each formula unit is associated with two water molecules (H₂O). So, the full chemical formula is CaHPO₄·2H₂O.
In the world of chemistry and industry, it is also known by other names, most commonly Dicalcium Phosphate Dihydrate (DCPD).
Key Properties:
Appearance: A fine, white, odorless powder.
Solubility: It has very low solubility in water but is soluble in dilute acids.
Stability: It is the most stable solid form of calcium phosphate in contact with a neutral or basic aqueous solution. However, upon heating, it can lose its water of hydration.
Due to its calcium and phosphorus content, stability, and physical properties, DCPD has a wide range of applications, primarily in healthcare, food, and dentistry.
This is one of its most significant uses. DCPD serves as an excipient—an inactive substance that acts as a carrier for the active drug.
Direct Compression Diluent/Filler: It is an excellent filler to add bulk to a tablet, making it a practical size for handling and consumption.
Binder: It helps powders stick together, providing the necessary mechanical strength to the tablet so it doesn't crumble.
Disintegrant: Despite being insoluble, it can help a tablet break apart in the digestive system, ensuring the active drug is released and absorbed.
Its neutral pH, compatibility with many active ingredients, and excellent flow properties make it a preferred choice for many tablet formulations, especially multivitamins and calcium supplements.
DCPD is a direct source of two essential minerals.
Calcium Supplement: It is used in calcium supplements and fortified foods (like cereals, meal replacement shakes, and baby formula) to prevent or treat calcium deficiency.
Source of Phosphorus: It also provides bioavailable phosphorus, which is crucial for bone health, energy production (ATP), and cellular function.
Food Additive (E341(ii)): In the food industry, it is used as:
A leavening agent in baking powders to help baked goods rise.
A dough conditioner in bread-making.
A nutrient fortifier.
A buffering agent to control acidity.
DCPD is a key compound in preventive dentistry.
Toothpaste Additive: It is a common abrasive in toothpaste. Its mild abrasive properties help remove plaque and surface stains without excessively damaging the tooth enamel.
Desensitizing Agent: In some specialized toothpastes, it can help occlude (block) the open dentinal tubules, reducing sensitivity to hot, cold, or touch.
Precursor to Hydroxyapatite: DCPD is a precursor in the formation of hydroxyapatite, the main mineral component of tooth enamel and bone. It plays a role in the chemical processes of remineralization, helping to repair early tooth decay.
Similar to its role in human nutrition, DCPD is added to livestock, poultry, and pet feed as a cost-effective and efficient source of calcium and phosphorus. This is essential for:
Healthy bone and skeletal development.
Eggshell quality in poultry.
Overall growth and metabolic functions.
| Field/Industry | Primary Function | Examples |
|---|---|---|
| Pharmaceuticals | Excipient (Filler, Binder, Disintegrant) | Tablets, capsules, calcium supplements |
| Nutrition | Dietary Supplement (Source of Ca & P) | Fortified foods, baby formula, meal replacements |
| Food Technology | Food Additive (E341(ii)) | Leavening agent, dough conditioner, nutrient fortifier |
| Dentistry | Abrasive & Remineralizing Agent | Toothpaste, desensitizing agents |
| Animal Feed | Nutritional Supplement | Livestock feed, pet food |
Important Note on Safety:
Calcium phosphate dibasic dihydrate is generally recognized as safe (GRAS) by regulatory bodies like the FDA when used in accordance with good manufacturing practices. However, as with any substance, excessive consumption can be harmful. It is always best to consume supplements and fortified foods as directed.
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