(inorganic chemistry) The ammonium salt of nitric acid, NH₄NO₃; it is used in fertilizers and explosives (notoriously in improvised explosive devices, though its main importance is as an explosive in its own right and in mixtures such as amatol and ANFO).

(Britain) Alternative spelling of ammonium sulfate

(US, inorganic chemistry) An inorganic chemical compound, (NH₄)₂SO₄, commonly used as a fertilizer and as a food additive (E517) used as an improving agent.

(inorganic chemistry) The ammonium salt of acetic acid, CH₃CO₂NH₄, that is used as a buffer in standard electrodes

(inorganic chemistry) NH₄HCO₃; a white powder with properties similar to those of ammonium carbonate.

(organic chemistry) The ammonium salt of carbamic acid; it is used as a nitrogen fertilizer, and in the manufacture of urea

plural of ammonium phosphatide

(inorganic chemistry) A highly toxic, orange powder that is used in the manufacture of paints, inks and dyes.

(inorganic chemistry) The salt of ammonium and phosphate.

plural of ammonium carbamate