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Ammonium Acetate

Other Names:

Ammonium ethanoate

Acetic acid ammonium salt

General Information:



CAS Number: 631-61-8

Molecular Weight: 77.08 g/mol

Appearance: White solid

Chemical Formula: NH4CH3CO2

Melting Point: 113 C

Ammonium acetate (NH4OAc) is a salt formed from the reaction of ammonia and acetic acid. It can be useful for applications that require buffered solutions. One reaction in which ammonium acetate is commonly used in is Henry reactions.

Common Uses:

Basic catalyst for Henry reactions

Procedure excerpt:

A mixture of the SM (150 g, 0.999 mol) and NH4OAc (30.8 g, 0.40 mol) in nitromethane (1.5 L) was refluxed for 16 h. The mixture was concentrated then . . .

[full procedure]


Ammonium acetate is labeled as an irritant.


1) Patent Reference: WO2016014463, page 94, (6.7 MB)

2) Wikipedia: Ammonium acetate (link)

3) Ammonium acetate (link)

4) A16343 Ammonium acetate, 97% (link)