| IUPAC name
| Systematic IUPAC name
| Other names
|Molar mass||77.08 g/mol|
|Appearance||Deliquescent white solid|
|Melting point||110–114 °C (230–237 °F; 383–387 K) (Decomposes)|
|Boiling point||117.1 °C (242.8 °F; 390.2 K) (At 760 mmHg, decomposes)|
| 102 g/100 mL (0 °C)|
148 g/100 mL (4 °C)
143 g/100 mL (20 °C)
533 g/100 mL (80 °C)
|Solubility||Soluble in acetone, ammonia, ethanol, sulfur dioxide|
|Solubility in methanol|| 7.89 g/100 mL (15 °C)|
131.24 g/100 g (94.2 °C)
|Solubility in dimethylformamide||0.1 g/100 g|
Std enthalpy of
|Safety data sheet||ScienceLab|
|Flash point||136 °C|
|Lethal dose or concentration (LD, LC):|
LD50 (Median dose)
|386 mg/kg (mice, intravenous)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Ammonium acetate is a chemical compound with the formula NH4CH3COO (sometimes written as CH3COONH4).
Ammonium acetate decomposes at temperatures above 165 °C to yield acetamide:
- CH3COONH4 → CH3C(O)NH2 + H2O
If heated further, it will convert to acetonitrile (methyl cyanide).
Ammonium acetate is a white hygroscopic solid. Ammonium acetate is volatile at low pressures.
Ammonium acetate can be purchased online cheaply.
Ammonium acetate can be prepared by reacting acetic acid with ammonia, ammonium bicarbonate or carbonate. Drying the solution by boiling the excess water is difficult, as ammonium acetate will decompose. The best way to synthesize it is to bubble ammonia gas into anhydrous (glacial) acetic acid, causing the ammonium acetate to crystallize, though this is expensive.
Ammonium acetate is non-toxic, though if heated it can generate acetamide which is considered carcinogenic.
Ammonium acetate is hygroscopic and will slowly hydrolyze to yield acetic acid, which is irritant and corrosive in large quantities.
Should be stored in dry sealed containers, as it's hygroscopic.
Ammonium acetate is a harmless source of nitrogen to organic life and can be discarded without any special treatments.