Product Overview

Aluminium Ammonium Sulphate Dodecahydrate 98% AR/ACS (CAS No. 7784-26-1) is a hydrated inorganic double sulphate commonly known as ammonium alum. Its crystalline structure incorporates aluminium, ammonium, sulphate, and water of crystallisation in a defined stoichiometric system. When introduced into aqueous laboratory systems, the compound provides a reproducible source of aluminium and sulphate ions, giving it established relevance in classical inorganic and analytical chemistry.

The AR/ACS grade is intended for analytical, quality-control, research, and academic laboratories requiring controlled reagent composition and carefully limited impurities. Compliance with analytical reagent and ACS requirements supports dependable preparation of reagent solutions and consistent performance in laboratory procedures where the chemical quality of the inorganic salt may influence the accuracy of the results.

Typical Applications

• Preparation of aluminium-containing analytical solutions
• Reagent preparation for classical inorganic analysis
• Qualitative and quantitative studies involving aluminium and sulphate ions
• Investigation of aluminium-ion hydrolysis and precipitation behaviour
• Complex-formation and coordination-chemistry studies
• Crystallisation, recrystallisation, and hydrated double-salt investigations
• Quality-control procedures requiring AR/ACS-grade ammonium alum
• Academic and research experiments in analytical and inorganic chemistry

Aluminium ammonium sulphate dodecahydrate is commercially recognised as an ACS reagent for analysis and is classified among salts used in classical inorganic analytical work.

Common Synonyms

• Ammonium Alum
• Aluminium Ammonium Sulphate Dodecahydrate
• Aluminum Ammonium Sulfate Dodecahydrate
• Ammonium Aluminium Sulphate Dodecahydrate
• Ammonium Aluminum Sulfate Dodecahydrate
• Aluminium Ammonium Disulphate Dodecahydrate
• Aluminum Ammonium Disulfate Dodecahydrate

Storage Conditions

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