Ammonium formate has diverse applications, particularly in chemical analysis and synthesis. It is frequently used as a buffer solution in liquid chromatography-mass spectrometry (LC/MS), as it improves the analysis of polar molecules and metabolites. In preparative organic chemistry, it serves as an important reagent, for example, in the production of amines via a reduction reaction. A technical application is found in low-freezing point solutions used for exhaust gas after-treatment to reduce the emission of nitrogen oxides. Furthermore, it can be used in analytical chemistry for the separation of base metals.