Ammonia solution, also known as ammonia water, ammonical liquor, ammonia liquor, aqua ammonia, aqueous ammonia, or (inaccurately) ammonia, is a solution of ammonia in water.
A 2031 (OTTO) Ammonia solution, GR 25% Cas 1336-21-6 - used as a precursor to some alkyl amines, although anhydrous ammonia is usually preferred.