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|Section2= |Section3= |Section4= |Section7= }} Ammonium acetate is a chemical compound with the formula NH4C2H3O2 (or C2H4O2.NH3 or C2H7NO2 or CH3COONH4). It is a white solid and can be derived from the reaction of ammonia and acetic acid. It is available commercially and, depending on grade, can be rather inexpensive. == Uses and distinctive properties == 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.〔(Berman et al., 2008. ''J Am Soc Mass Spectrom'', 19:1230-1236. )〕 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. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ammonium acetate」の詳細全文を読む スポンサード リンク
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