Calcium pyrophosphate

Basic Information

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CAS Number

7790-76-3

Molecular Formula

Ca2O7P2

Molecular Weight

254.1 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

Melting Point

1353 °C

Boiling Point

°Cat760mmHg

Density

3.09 g/mL at 25 °C

Water Solubility

Soluble in hydrochloric acid and nitric acid. Insoluble in water.

Solubility

H2O: insoluble(lit.)

SMILES

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

InChI

1S/2Ca.H4O7P2/c;;1-8(2,3)7-9(4,5)6/h;;(H2,1,2,3)(H2,4,5,6)/q2*+2;/p-4

InChIKey

JUNWLZAGQLJVLR-UHFFFAOYSA-J

LogP

0.94120

Complexity

124

Safety Information

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GHS Hazard Pictograms

H315

H319

H335

Hazard Statement

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Synonyms & References

English

Calcium Pyrophosphate
CALCIUM PHOSPHATE (PYRO)
CALCIUM DIPHOSPHATE
CPP
DICALCIUM PYROPHOSPHATE
calciumphosphate
Diphosphoricacid,calciumsalt
dicalcium,phosphonato phosphate
ACP
calcium phosphate (ca2p2o7)
calcium pyrophosphate (ca2p2o7)
pyrophosphoric acid, calcium salt
diphosphoric acid, calcium salt
Diphosphoric acid,calcium salt
Dicalcium diphosphate
CALCIUMPYROPHOSPHATE
X69NU20D19
alpha-Calcium pyrophosphate
Diphosphoric acid, calcium salt (1:2)
calcium salt (1:2)
Pyrophosphoric acid, calcium salt (1:2)
dicalcium(2+) diphosphate
Ca2P2O7
Dicalcium pyrophosphate
calcium diphosphate
dicalcium pyrophosphate

MDL Number

MFCD00015983

Customs Code

28353100

FAQ

What are the physical and chemical properties of Calcium pyrophosphate (CAS: 7790-76-3)?

Calcium pyrophosphate (CAS: 7790-76-3) is a white, crystalline powder with a high melting point. Its molecular weight is approximately 140.09 g/mol. It is almost insoluble in water but soluble in acids. It is relatively stable under normal conditions but reacts with acids to form calcium phosphate and phosphoric acid.

How is Calcium pyrophosphate (CAS: 7790-76-3) typically synthesized?

Calcium pyrophosphate (CAS: 7790-76-3) is synthesized by reacting calcium carbonate or calcium oxide with phosphoric acid. The process typically involves heating a mixture of calcium oxide and phosphoric acid to form calcium pyrophosphate dihydrate. This method allows for high yields and good selectivity.

What industries use Calcium pyrophosphate (CAS: 7790-76-3)?

Calcium pyrophosphate (CAS: 7790-76-3) is used in the pharmaceutical industry as an ingredient in calcium supplements and as a pharmaceutical excipient. It is also used in the food industry as a food additive and in the plastics industry as a filler. Additionally, it is used in the ceramics and glass industries for its properties.

What precautions should be taken when handling Calcium pyrophosphate (CAS: 7790-76-3)?

When handling Calcium pyrophosphate (CAS: 7790-76-3), it is important to use appropriate personal protective equipment (PPE), including gloves and safety goggles. Handling should be done in a well-ventilated area or a fume hood. In case of spills, they should be cleaned up immediately using appropriate methods. Always refer to the safety data sheet (SDS) for detailed handling instructions and emergency procedures.