Phosphate(3-)
A phosphate ion that is the conjugate base of hydrogenphosphate. — ChEBI
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Identity & molecular properties
Source-linked values| CAS number | 14265-44-2 | ChEBI ↗ |
| Molecular formula | O4P | ChEBI ↗ |
| Molar mass | 94.97 g/mol | ChEBI ↗ |
| Monoisotopic mass | 94.95507 Da | ChEBI ↗ |
| Formal charge | -3 | ChEBI ↗ |
| ChEBI identifier | CHEBI:18367 | ChEBI ↗ |
Cross-source molecular data
PubChem| Molar mass | 94.971 g/mol | PubChem ↗ |
| Exact mass | 94.95342047 Da | PubChem ↗ |
PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.
Names & structural identifiers
Copy any identifierphosphate(3-)phosphateNBIIXXVUZAFLBC-UHFFFAOYSA-KO=P([O-])([O-])[O-]InChI=1S/H3O4P/c1-5(2,3)4/h(H3,1,2,3,4)/p-3Names & synonyms
Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.
Classification & relationships
ChEBI ontologyMass ↔ amount of substance
Calculated from sourced massUses 94.97 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Elemental composition
Theoretical mass fractionsOPCalculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.
Research & patent references
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Sources & record history
Checked 27 Sep 2026Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0
PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.