noun

• The cation NH₄⁺, present in solutions of ammonia and in salts derived from ammonia.

  ‘ammonium compounds’

  More example sentences

  • ‘ammonium sulphate’
  • ‘Amides are hydrolysed to ammonium salts with catalysis by acids or alkalis.’
  • ‘The perchloric acid then neutralises the alkali ammonia forming crystals of ammonium perchlorate salt.’
  • ‘And it contained the inorganic salts manganese sulphate, potassium chloride and ammonium sulphate.’
  • ‘These include things such as urea, ammonia, nitric acid, and ammonium phosphate.’
  • ‘In nickel plating, an electrolytic solution containing nickel ammonium sulfate may be used.’