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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Reference substances

Reference substances

Currently viewing:
IUPAC name:
tricalcium diphosphate

Inventory

EC number:
235-330-6
EC name:
Pentacalcium hydroxide tris(orthophosphate)
CAS number:
12167-74-7
CAS number:
12167-74-7
Synonyms
Names:
TCP
Tricalcium phosphate
hydroxyapatite
pentacalcium hydroxide triphosphate
tricalcium hydroxide diphosphate

Molecular and structural information

Molecular formula:
Ca5HO13P3
Molecular weight:
ca. 502
SMILES notation:
[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])(=O)[O-].[O-]P([O-])([O-])=O.[OH-].[O-]P([O-])([O-])=O
InChl:
InChI=1/5Ca.3H3O4P.H2O/c;;;;;3*1-5(2,3)4;/h;;;;;3*(H3,1,2,3,4);1H2/q5*+2;;;;/p-10
Structural formula:
Chemical structure

Related substances

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Identifier:
CAS number
Identity:
1306-06-5
Identifier:
CAS number
Identity:
68439-86-1