Product Overview

Aluminium Ammonium Sulphate Dodecahydrate 98% Extra Pure (CAS No. 7784-26-1) is an inorganic double sulphate commonly known as ammonium alum. It contains aluminium and ammonium ions within a hydrated sulphate crystal system and displays the characteristic ionic behaviour of alum compounds in aqueous chemical systems. Its ability to supply aluminium ions and participate in hydrolysis, precipitation, and double-salt chemistry makes it a useful reagent in inorganic laboratory work and material-preparation studies.

The Extra Pure grade is intended for routine laboratory procedures, research, preparative inorganic chemistry, and educational applications requiring dependable reagent quality. It is suitable for experiments involving alum chemistry, aluminium-containing preparations, precipitation studies, and the development of inorganic materials where ammonium alum is specified as a starting reagent.

Typical Applications

• Preparation of aluminium hydroxide gel and related aluminium-containing materials
• Laboratory investigation of alum formation and double-salt chemistry
• Precipitation, crystallisation, and recrystallisation studies
• Preparation of selected pigments and inorganic intermediates
• Mordant-related dyeing and textile laboratory investigations
• Paper, cement, and material-formulation research
• Water-treatment and coagulation studies at laboratory scale
• Academic and research experiments in inorganic and materials chemistry

Aluminium ammonium sulphate dodecahydrate is established as a crystalline double sulphate used in aluminium hydroxide gel preparation, water-treatment studies, textile processing, pigments, paper, and cement-related applications.

Common Synonyms

• Ammonium Alum
• Aluminium Ammonium Sulphate Dodecahydrate
• Aluminum Ammonium Sulfate Dodecahydrate
• Ammonium Aluminium Sulphate Dodecahydrate
• Ammonium Aluminum Sulfate Dodecahydrate
• Aluminium Ammonium Sulphate 12-Hydrate

Storage Conditions

Store in a tightly closed container in a cool, dry, and well-ventilated place. Protect the product from moisture, contamination, and incompatible materials. Reseal the container promptly after dispensing and handle the material carefully to minimise dust formation and preserve reagent quality.