Calcium hydrogen phosphate

Basic Information

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CAS Number

7757-93-9

Molecular Formula

HCaO4P

Molecular Weight

136.06 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Agricultural Chemicals Pesticides Insecticides

Water Treatment Chemicals Coagulants and Flocculants Inorganic Coagulants

Basic Physical Properties

Boiling Point

158 °C at 760 mmHg

Density

2.306（16℃）

Water Solubility

Soluble in hydrochloric acid, nitric acid, acetic acid, ammonium citrate solution. Slightly soluble in water. Insoluble in ethanol.

SMILES

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OP(=O)([O-])[O-].[Ca+2]

InChI

InChI=1S/Ca.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+2;/p-2

InChIKey

FUFJGUQYACFECW-UHFFFAOYSA-L

LogP

-0.05220

Complexity

46.5

Safety Information

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Stability

Stable. Incompatible with strong oxidizing agents.

Synonyms & References

English

Calcium perphosphate,ammonified,granular
calcium hydrogenorthophosphate
Calcium Hydrogen Phosphate
Calcium monohydrogen phosphate
Calcium phosphate, dibasic
Phosphoric acid, calcium salt (1:1)
Secondary calcium
Dicalcium phosphate
Dibasic Calcium Phosphate
Calcium hydrogen phosphate,agricultural
Calcium phosphate
calcium acid phosphate
calcium dibasic phosphate
calcium phosphate (cahpo4)
calcium hydrogen orthophosphate
calcium phosphate
Calcium phosphate dibasic
Anhydrous Calcium Hydrogen Phosphate
phosphoric acid
calcium salt
Calcium secondary phosphate
CALCIUM PHOSPHATE, DIBASIC ANHYDROUS
CALCIUM HYDROGEN MONOPHOSPHATE
Dicalcium phosphate, anhydrous
Particle size : inverted exclamation markY100 mesh
Calcium phosphate dibasic, puriss. p.a., anhydrous, >98.5% (KT)
CALCIUM PHOSPHATE (1:1) [WHO-IP]
Calcium phosphate, dibasic, anhydrous
PHOSPHORUS (AS DICALCIUM PHOSPHATE) [VANDF]
NS00075688
Calcium phosphate dibasic, 98.0-105.0%

MDL Number

MFCD00010909

FAQ

What is Calcium hydrogen phosphate (CAS: 7757-93-9)?

Calcium hydrogen phosphate (CAS: 7757-93-9) is a white, crystalline inorganic compound with the chemical formula CaHPO4·2H2O. It is a calcium salt of phosphoric acid, commonly used as a food additive, pharmaceutical ingredient, and industrial material. The compound is slightly soluble in water and exhibits mild hygroscopic properties, making it suitable for various applications requiring controlled release of calcium or phosphate ions.

What are the main uses of Calcium hydrogen phosphate (CAS: 7757-93-9)?

Calcium hydrogen phosphate (CAS: 7757-93-9) is widely used in food industry as an emulsifier, stabilizer, and anti-caking agent (E341). It also serves as a source of calcium in dietary supplements and pharmaceuticals, and is employed in industrial processes like detergent manufacturing and flame retardant production. In research, it functions as a buffer and reagent for phosphate-related studies, leveraging its chemical stability and solubility properties.

Is Calcium hydrogen phosphate (CAS: 7757-93-9) safe?

Calcium hydrogen phosphate (CAS: 7757-93-9) is generally considered safe when used in accordance with regulatory guidelines. It is non-toxic in moderate amounts but may cause mild irritation upon inhalation or skin contact. Safety standards, such as those set by the FDA and OSHA, ensure its use in food and pharmaceuticals is controlled. Proper handling, including PPE and ventilation, minimizes risks during industrial or laboratory applications.

How should Calcium hydrogen phosphate (CAS: 7757-93-9) be stored?

Calcium hydrogen phosphate (CAS: 7757-93-9) should be stored in a cool, dry place (ideally below 25°C), away from moisture and light. Use airtight, sealed containers to prevent hygroscopic degradation. Maintain humidity levels below 60% and store in well-ventilated areas to ensure stability. Avoid exposure to acids or alkalis to preserve its chemical integrity.