Product Overview

Ammonia Solution 25% Extra Pure (CAS No. 1336-21-6) is an aqueous ammonia reagent that provides a strongly alkaline medium through the equilibrium between dissolved ammonia, ammonium ions, and hydroxide ions. Its solution-phase basicity and ability to interact with selected metal ions make it useful in neutralisation, precipitation, complex formation, and the preparation of ammoniacal reaction systems.

The Extra Pure grade is intended for routine laboratory preparation, inorganic synthesis, research, and educational procedures requiring a reliable aqueous ammonia source. Its 25% concentration is suitable for preparing diluted alkaline reagents, controlling reaction conditions, producing ammonium compounds, and carrying out general laboratory processes in which ammonia functions as a base or coordinating reagent.

Typical Applications

• Preparation of alkaline laboratory solutions and reagents
• Adjustment of pH in reaction mixtures
• Neutralisation of acidic solutions and intermediates
• Precipitation of selected metal hydroxides
• Formation of metal–ammine complexes
• Preparation of ammonium salts
• Use as a base in inorganic and preparative chemistry
• Routine qualitative and educational laboratory experiments

Common Synonyms

• Aqueous Ammonia
• Ammonium Hydroxide Solution
• Ammonia Water
• Ammonia, Aqueous Solution
• Ammonia Solution 25%
• Ammoniacal Solution

Storage Conditions

Store in the original, tightly closed, chemically compatible container in a cool and well-ventilated location. Protect the solution from heat, direct sunlight, and prolonged exposure to air. Reseal the container immediately after dispensing to minimise ammonia loss and preserve the stated concentration.