Ammonium benzoate

Ammonium benzoate
Ball-and-stick model of the benzoate anion	Ball-and-stick model of the ammonium cation
Identifiers
CAS Number	1863-63-4 ;
3D model (JSmol)	Interactive image;
ChemSpider	15050 ;
ECHA InfoCard	100.015.881
EC Number	217-468-9;
PubChem CID	15830;
RTECS number	DG337800;
UNII	AC80WD7GPF ;
CompTox Dashboard (EPA)	DTXSID4041602 ;
	InChI InChI=1S/C7H6O2.H3N/c8-7(9)6-4-2-1-3-5-6;/h1-5H,(H,8,9);1H3 Key: VWSRWGFGAAKTQG-UHFFFAOYSA-N ; InChI=1/C7H6O2.H3N/c8-7(9)6-4-2-1-3-5-6;/h1-5H,(H,8,9);1H3 Key: VWSRWGFGAAKTQG-UHFFFAOYAJ;
	SMILES [O-]C(=O)c1ccccc1.[NH4+];
Properties
Chemical formula	C7H9NO2
Molar mass	139.15 g/mol
Appearance	White solid
Density	1.26 g/cm3
Melting point	198 °C (388 °F; 471 K)
Solubility in water	21.3 g/100 mL (20 °C) ; 83 g/100 mL (100 °C)
Solubility	soluble in methanol ; insoluble in diethyl ether
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H315, H319, H335
Precautionary statements	P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, P501
NFPA 704 (fire diamond)	2 1 2
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	825 mg/kg, oral (rat)
Safety data sheet (SDS)	Fisher Scientific
	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 benzoate, a white powder-like substance, is the ammonium salt of benzoic acid.^[1] This compound is prepared by the reaction of benzoic acid and ammonia.

Uses

Ammonium benzoate is used as a food preservative, due to its antibacterial and antifungal properties.^[2]^[3]

Ammonium benzoate can be dehydrated to form benzamide:

C₇H₉NO₂ → C₇H₇NO + H₂O

^ Yang, Wei-Wei; Di, You-Ying; Kong, Yu-Xia; Guo, Xiao-Yang; Tan, Zhi-Cheng (2010). "Synthesis, characterization, and thermodynamic study of ammonium benzoate C7H5O2NH4(s)". Thermochimica Acta. 502 (1–2): 14–19. doi:10.1016/j.tca.2010.01.021.
^ "Ammonium Benzoate: Essential Properties and Applications for Manufacturers". www.nbinno.com. Retrieved 2026-01-12.
^ "21 CFR 175.105 - Adhesives". www.ecfr.gov. Retrieved 2026-01-12.