# Tripotassium phosphate trihydrate (CAS 22763-03-7)

CAS: 22763-03-7
PubChem CID: 18407952
InChIKey: KPZYAGQLBFUTMA-UHFFFAOYSA-K
Wikidata: Q82487968
Molecular formula: H₆K₃O₇P
Molar mass: 266.31 g/mol
IUPAC: tripotassium;phosphate;trihydrate
SMILES: O.O.O.[O-]P(=O)([O-])[O-].[K+].[K+].[K+]
InChI: InChI=1S/3K.H3O4P.3H2O/c;;;1-5(2,3)4;;;/h;;;(H3,1,2,3,4);3*1H2/q3*+1;;;;/p-3
PSA: 89.3 A^2
Hydrogen bond donors: 3
Hydrogen bond acceptors: 7
Rotatable bonds: 0
Heavy atoms: 11
3D structure: 17 atoms, 10 bonds

## About the compound

Tripotassium phosphate trihydrate (CAS 22763-03-7) is a chemical compound registered under CAS number 22763-03-7. Molecular formula: H₆K₃O₇P. Molar mass: 266.31 g/mol. The full systematic IUPAC name is: tripotassium;phosphate;trihydrate. The molecule contains 17 atoms connected by 10 chemical bonds. 
Chemical data comes from the PubChem (NIH), ChEMBL (EBI) and NIST WebBook databases. GHS statement translations comply with the CLP Regulation (EC 1272/2008). Interactive 3D model and 2D skeleton available at: https://molgod.org/molekula/22763-03-7/


## Synonyms

  - tripotassium phosphate trihydrate
  - RefChem:900066
  - Potassium phosphate trihydrate
  - 22763-03-7
  - POTASSIUM PHOSPHATE TRIBASIC TRIHYDRATE
  - tripotassium;phosphate;trihydrate
  - H6K3O7P
  - Tri-potassium phosphate trihydrate
  - MFCD00151709
  - Potassiumphosphatetrihydrate
  - PHOSPHORIC ACID TRIPOTASSIUM SALT TRIHYDRATE
  - SCHEMBL152268

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## Data sources

  - PubChem CID 18407952: https://pubchem.ncbi.nlm.nih.gov/compound/18407952
  - Wikidata: https://www.wikidata.org/wiki/Q82487968
  - NIST WebBook: https://webbook.nist.gov/cgi/cbook.cgi?ID=22763-03-7
  - ChEMBL: https://www.ebi.ac.uk/chembl/g/#search_results/all/query=22763-03-7

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Last updated: 2026-09-02
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