Ammonia solution, also known as
ammonium hydroxide,
ammonia water,
ammonical liquor,
ammonia liquor,
aqua ammonia,
aqueous ammonia, or simply
ammonia, is a solution of
ammonia in water. It can be denoted by the symbols NH
3(aq). Although the name ammonium hydroxide suggests an alkali with
composition [NH
4+][OH
-], it is actually impossible to isolate samples of NH
4OH, as these ions do not comprise a significant fraction of the total amount of ammonia except in extremely dilute solutions.