Definition

Noun A colorless, basic, aqueous solution of ammonia (NH₃) in water. It is commonly used as a cleaning agent and in various chemical processes.

Usage

"Ammonium hydroxide" is a chemical term. It is used as a non-count noun to refer to the solution itself. It is often found in technical, industrial, and household cleaning contexts.

Examples

• The laboratory uses ammonium hydroxide as a common reagent for neutralization.
• Many glass cleaners contain a dilute solution of ammonium hydroxide.
• The strong, pungent smell in the room was from spilled ammonium hydroxide.

Advanced Usage

• Chemical Precursor: In manufacturing, ammonium hydroxide is a key precursor for producing other ammonium compounds and in organic synthesis.
  • The synthesis required the careful addition of ammonium hydroxide to precipitate the product.

Variants and Related Words

• Aqua Ammonia: A common synonym, especially in industrial contexts.
• Ammonia Water: A less formal term for the same solution.
• NH₄OH: The common chemical formula used to represent ammonium hydroxide, though it is an equilibrium mixture of NH₃ and H₂O.

Synonyms

• Aqua ammonia
• Ammonia solution
• Ammonia water

Notes on Meaning

While "ammonium hydroxide" formally suggests the presence of NH₄⁺ and OH⁻ ions, in practice, it refers to an aqueous ammonia solution where most of the ammonia exists as dissolved NH₃ molecules. The terms "ammonia" and "ammonium hydroxide" are often used interchangeably in commercial and general contexts, though "ammonium hydroxide" specifically denotes the aqueous solution.

Noun

1. a water solution of ammonia