Diammonium hydrogen phosphate
An inorganic phosphate, being the diammonium salt of phosphoric acid. The commercially available fertilizer has an analysis of 18-46-0 (N-P2O5-K2O) and is marketed under the name diammonium phosphate or DAP. — ChEBI
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Identity & molecular properties
Source-linked values| CAS number | 7783-28-0 | ChEBI ↗ |
| Molecular formula | 2H4N.HO4P | ChEBI ↗ |
| Molar mass | 132.056 g/mol | ChEBI ↗ |
| Monoisotopic mass | 132.02999 Da | ChEBI ↗ |
| Formal charge | 0 | ChEBI ↗ |
| ChEBI identifier | CHEBI:63051 | ChEBI ↗ |
Names & structural identifiers
Copy any identifierdiammonium hydrogen phosphatediammonium hydrogen phosphateMNNHAPBLZZVQHP-UHFFFAOYSA-NO=P([O-])([O-])O.[NH4+].[NH4+]InChI=1S/2H3N.H3O4P/c;;1-5(2,3)4/h2*1H3;(H3,1,2,3,4)Names & synonyms
Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.
Classification & relationships
ChEBI ontologyRoles recorded in ChEBI
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 massUses 132.056 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Research & patent references
Selected source associationsSources & record history
Checked 27 Sep 2026Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0
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