Ammonium dihydrogen phosphate

Ammonium dihydrogen phosphate
Names
	IUPAC name Ammonium dihydrogen phosphate
	Other names Monoammonium phosphate
Identifiers
CAS Number	7722-76-1 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:62982;
ChemSpider	22812 ;
ECHA InfoCard	100.028.877
EC Number	231-764-5;
E number	E342(i) (antioxidants, ...)
PubChem CID	24402;
UNII	09254QB17T;
CompTox Dashboard (EPA)	DTXSID5029689 ;
	InChI InChI=1S/H3N.H3O4P/c;1-5(2,3)4/h1H3;(H3,1,2,3,4) Key: LFVGISIMTYGQHF-UHFFFAOYSA-N ; InChI=1/H3N.H3O4P/c;1-5(2,3)4/h1H3;(H3,1,2,3,4) Key: LFVGISIMTYGQHF-UHFFFAOYAX;
	SMILES [O-]P(=O)(O)O.[NH4+];
Properties
Chemical formula	H6NO4P
Molar mass	115.025 g·mol−1
Appearance	white crystals
Odor	none
Density	1.80 g/cm3
Melting point	190 °C (374 °F; 463 K)
Solubility in water	(g/dL) 28 (10 °C); 36 (20 °C); 44 (30 °C); 56 (40 °C); 66 (50 °C); 81 (60 °C); 99 (70 °C); 118 (80 °C); 173 (100 °C)
Solubility	insoluble in ethanol ; insoluble in acetone
Refractive index (nD)	1.525
Structure
Crystal structure	tetragonal
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	−1445.07 kJ/mol
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H319
Precautionary statements	P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
NFPA 704 (fire diamond)	1 0 0
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	5750 mg/kg (rat, oral)
Related compounds
Other anions	Ammonium phosphate; Diammonium phosphate
Other cations	Monosodium phosphate; Potassium dihydrogen phosphate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Ammonium dihydrogen phosphate (ADP), also known as monoammonium phosphate (MAP) is a chemical compound with the chemical formula (NH₄)(H₂PO₄). ADP is a major ingredient of agricultural fertilizers and dry chemical fire extinguishers. It also has significant uses in optics and electronics.