What is the difference between anydrous ammonia and aqueous ammonia?

Answer 1

Anhydrous ammonia is pure ammonia. Under normal conditions it is a gas, but it is usually stored as a liquid under pressure.

Aqueous ammonia is ammonia dissolved in water. Household ammonia is a 3% solution of aqueous ammonia.

Answer 2

Anhydrous ammonia is pure ammonia gas without water, while aqueous ammonia is ammonia dissolved in water. Anhydrous ammonia is typically used for fertilizer and refrigeration, while aqueous ammonia is commonly used in cleaning products and water treatment. Anhydrous ammonia is stored and handled under high pressure as a compressed gas, while aqueous ammonia is a liquid solution with a lower concentration of ammonia.