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Chemical substance record

Dipotassium hydrogen phosphate

7758-11-4HO4P.2K174.174 g/mol
Salt and Compound WithChEBI source record

A potassium salt that is the dipotassium salt of phosphoric acid. — ChEBI

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Identity & molecular properties

Source-linked values
CAS number7758-11-4ChEBI ↗
Molecular formulaHO4P.2KChEBI ↗
Molar mass174.174 g/molChEBI ↗
Monoisotopic mass173.88866 DaChEBI ↗
Formal charge0ChEBI ↗
ChEBI identifierCHEBI:131527ChEBI ↗

Cross-source molecular data

PubChem
Molar mass174.176 g/molPubChem ↗
Exact mass173.88865848 DaPubChem ↗

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

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dipotassium hydrogen phosphate
dipotassium hydrogen phosphate
ZPWVASYFFYYZEW-UHFFFAOYSA-L
O=P([O-])([O-])O.[K+].[K+]
InChI=1S/2K.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2

Classification & relationships

ChEBI ontology

Roles recorded in ChEBI

renoprotective agentbuffer

Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.

Mass ↔ amount of substance

Calculated from sourced mass
Equivalent amount
0.00574139 mol

Uses 174.174 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions
O
Oxygen · 4 atoms
38.54%
P
Phosphorus · 2 atoms
37.31%
K
Potassium · 1 atom
23.55%
H
Hydrogen · 1 atom
0.61%

Calculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.

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Sources & record history

Checked 27 Sep 2026
EMBL-EBI ChEBI · CHEBI:131527

Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0

NCBI PubChem · CID 24450 · retrieved 2026-09-27

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.