What is Anhydrous Dicalcium Phosphate CAS 7757-93-9?

Anhydrous Dicalcium Phosphate CAS 7757-93-9 is calcium hydrogen phosphate with the formula CaHPO4. It is supplied as a white powder or granule and used as a concentrated calcium and phosphorus source in animal feed, plus as a food-grade mineral additive.

How is the anhydrous form different from dicalcium phosphate dihydrate?

The anhydrous form is CaHPO4 without crystal water, while the dihydrate is CaHPO4.2H2O. Removing the water increases nutrient density, so the anhydrous feed grade can supply more phosphorus per kilogram than the hydrated grade.

What phosphorus and calcium levels does this feed-grade product provide?

The listing specifies phosphorus of at least about 19.7-20.0% and calcium of at least 30.0%. This higher phosphorus density helps reduce the amount of product needed in a feed formulation compared with a hydrated dicalcium phosphate.

What are the main animal-feed benefits?

It supports bone and tooth development in growing livestock and poultry, helps prevent rickets and osteomalacia, and improves eggshell hardness in laying hens. It is chemically neutral enough to be blended with vitamins and many other feed ingredients.

Is Anhydrous Dicalcium Phosphate also used in food products?

Yes. Food-grade calcium hydrogen phosphate can be used as a calcium supplement, dough conditioner, leavening aid or mineral fortifier. It is also used in toothpaste as a mild polishing and abrasive agent.

Why is low fluorine content important?

Excess fluorine can be harmful in long-term animal diets. The low-fluorine specification of no more than 0.18% helps keep feed formulations within acceptable fluoride limits for livestock and poultry.

What are the solubility, pH and handling characteristics?

Anhydrous dicalcium phosphate is practically insoluble in water but dissolves in dilute mineral acids. The feed-grade material in this listing has a pH of about 3.5-5.5 under the stated test conditions, so keep it dry in closed packaging and confirm the grade is suitable for the intended feed or food formulation.

Anhydrous Dicalcium Phosphate CAS 7757-93-9

Anhydrous Dicalcium Phosphate (CAS 7757-93-9) is an inorganic calcium salt utilized as a polishing agent in oral care products and a nutritional mineral source in feed formulations. Chemically identified as Calcium hydrogen phosphate or Dibasic calcium phosphate, this white powder functions to aid tablet compaction and provide essential phosphorus in dietary matrices. As a stable Calcium monohydrogen phosphate compound, it acts as an effective abrasive and bulking agent within toothpaste and pharmaceutical excipient manufacturing. We ensure bulk supply capabilities for this material, providing access to competitive factory pricing and customized specifications to meet specific particle size distribution needs. Full technical documentation, including MSDS, TDS, COA, is available to support compliance and safety protocols.

CAS: 7757-93-9
Synonyms: Calcium hydrogen phosphate, Dibasic calcium phosphate, Calcium monohydrogen phosphate, Calcium phosphate dibasic
Einecs: 231-826-1
Molecular Formula: CaHPO₄
Grade: Feed Grade / Food Grade
Package: 25kg PP/PE bags, 50kg bags, or 1000kg Jumbo bags (Customizable)

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Product Description

Anhydrous Dicalcium Phosphate appears as a white powder or granule. It is produced by neutralizing phosphoric acid with calcium carbonate or lime milk, followed by drying to remove moisture and crystal water.

Compared to DCP Dihydrate (18% P), the Anhydrous form provides a higher nutrient density (min 20% P), meaning less volume is required per ton of feed. It is chemically neutral, making it compatible with other feed ingredients like vitamins and antibiotics. Its high biological availability ensures strong skeletal development, improved eggshell quality, and optimized growth rates in animals.

1 Physicochemical Properties

2 Applications

3 Storage Conditions

4 Safety Precautions

Physicochemical Properties

Parameter	Specification (Feed Grade Anhydrous)
Appearance	White Powder or Granule
Phosphorus (P)	≥ 19.7% – 20.0%
Calcium (Ca)	≥ 30.0%
Fluorine (F)	≤ 0.18% (Low Fluorine)
Arsenic (As)	≤ 20 ppm (0.002%)
Lead (Pb)	≤ 20 ppm (0.002%)
Cadmium (Cd)	≤ 10 ppm
Moisture	≤ 1.0%
pH Value	3.5 – 5.5
Particle Size	95% Pass 60 Mesh (Powder)

Applications

Livestock & Poultry Feed:
- Bone Health: Accelerates the development of bones and teeth in growing animals, preventing rickets and osteomalacia.
- Layer Hens: Significantly improves eggshell hardness and reduces breakage rates.
- Growth Promoter: Increases daily weight gain and feed conversion ratio (FCR).
Aquaculture:
- Provides essential phosphorus for fish and shrimp, promoting shell formation and reducing water pollution caused by unabsorbed phosphorus.
Mineral Licks:
- Used as a base ingredient in salt licks and mineral blocks for cattle and sheep.
Food Industry (If Food Grade specified):
- Used as a leavening agent, dough modifier, and nutritional supplement in flour, biscuits, and milk powder.

Storage Conditions

Dryness: Store in a cool, dry, and well-ventilated warehouse.
Protection: Prevent exposure to rain and moisture during transportation and storage.
Handling: Keep bags sealed when not in use to maintain the anhydrous state.
Segregation: Do not store alongside toxic or hazardous materials.

Safety Precautions

Handling: Anhydrous DCP is generally safe and non-toxic. However, inhalation of dust should be avoided.
PPE: Wear a dust mask, safety glasses, and gloves during handling to prevent mechanical irritation.
Hygiene: Wash hands thoroughly after handling.
Environment: The product is biodegradable but should not be dumped into water bodies in large quantities due to phosphate content (eutrophication risk).

FAQ - Technical & Supply Chain

Q:
What is Anhydrous Dicalcium Phosphate CAS 7757-93-9?

A: Anhydrous Dicalcium Phosphate CAS 7757-93-9 is calcium hydrogen phosphate with the formula CaHPO4. It is supplied as a white powder or granule and used as a concentrated calcium and phosphorus source in animal feed, plus as a food-grade mineral additive.
Q:
How is the anhydrous form different from dicalcium phosphate dihydrate?

A: The anhydrous form is CaHPO4 without crystal water, while the dihydrate is CaHPO4.2H2O. Removing the water increases nutrient density, so the anhydrous feed grade can supply more phosphorus per kilogram than the hydrated grade.
Q:
What phosphorus and calcium levels does this feed-grade product provide?

A: The listing specifies phosphorus of at least about 19.7-20.0% and calcium of at least 30.0%. This higher phosphorus density helps reduce the amount of product needed in a feed formulation compared with a hydrated dicalcium phosphate.
Q:
What are the main animal-feed benefits?

A: It supports bone and tooth development in growing livestock and poultry, helps prevent rickets and osteomalacia, and improves eggshell hardness in laying hens. It is chemically neutral enough to be blended with vitamins and many other feed ingredients.
Q:
Is Anhydrous Dicalcium Phosphate also used in food products?

A: Yes. Food-grade calcium hydrogen phosphate can be used as a calcium supplement, dough conditioner, leavening aid or mineral fortifier. It is also used in toothpaste as a mild polishing and abrasive agent.
Q:
Why is low fluorine content important?

A: Excess fluorine can be harmful in long-term animal diets. The low-fluorine specification of no more than 0.18% helps keep feed formulations within acceptable fluoride limits for livestock and poultry.
Q:
What are the solubility, pH and handling characteristics?

A: Anhydrous dicalcium phosphate is practically insoluble in water but dissolves in dilute mineral acids. The feed-grade material in this listing has a pH of about 3.5-5.5 under the stated test conditions, so keep it dry in closed packaging and confirm the grade is suitable for the intended feed or food formulation.

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