Diammonium Phosphate (DAP)
High-phosphorus fertilizer
Overview
Diammonium Phosphate (DAP) (CAS No. 7783-28-0) is a chemical compound with molecular formula H9N2O4P and molecular weight 132.06 g/mol. It is widely used as an industrial chemical and specialty reagent.
Also known as: Diammonium hydrogen phosphate; DIAMMONIUM PHOSPHATE; Ammonium phosphate dibasic; Phosphoric acid, diammonium salt.
Physical & Chemical Properties
| Molecular Formula | H9N2O4P |
| Molecular Weight | 132.06 g/mol |
| Appearance | Brown Spherical Solid |
| Boiling Point | 158ºC at 760 mmHg |
| Density | 1.203 g/mL at 25ºC |
| Synonyms | Diammonium hydrogen phosphate; DIAMMONIUM PHOSPHATE; Ammonium phosphate dibasic; Phosphoric acid, diammonium salt |
| Quality Standard | Melting Point: 155ºC (dec.)(lit.); Refractive Index: 1.53 |