Molecular formula: CH3COONH4
Appearance: white crystal
|water insolusfe matter%||≤0.04|
|chloride (Cl) %||≤0.08|
|iron (Fe) %||≤0.006|
|heavy metal (Pb) %||≤0.003|
|Free Alkali %||≤0.03|
As the salt of a weak acid and a weak base, ammonium acetate has a number of distinctive properties.
NH4C2H3O2 is occasionally employed as a biodegradable de-icing agent.
It is often used with acetic acid to create a buffer solution, one that can be thermally decomposed to non-ionic products
Ammonium acetate is useful as a catalyst in the Knoevenagel condensation and as a source of ammonia in the Borch reaction in organic synthesis.
It is a relatively unusual example of a salt that melts at low temperatures.
Can be used with distilled water to make a protein precipitating reagent.
Is often used as an aqueous buffer for ESI mass spectrometry of proteins and other molecules.
Useful in dialysis as part of a protein purification step to remove contaminants via diffusion.
Ammonium acetate is volatile at low pressures. Because of this, it has been used to replace cell buffers with non-volatile salts in preparing samples for mass spectrometry. It is also popular as a buffer for mobile phases for HPLC with ELSD detection for this reason. Other volatile salts that have been used for this include ammonium formate.