Aluminum sulfate hydrate

Catalog	ACM17927650-2
CAS	17927-65-0
Structure
Category	Flocculant
Synonyms	Dialuminum trisulfate hydrate
IUPAC Name	dialuminum trisulfate hydrate
Molecular Weight	360.17
Molecular Formula	Al2H₂O13S3
Canonical SMILES	O.[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[Al+3].[Al+3]
Melting Point	86.5 °C
Purity	99%+
Density	1.69 g/mL at 25 °C (lit.)
Solubility	Slightly soluble in alcohol and dilute mineral acids
Appearance	White crystalline
Application	Aluminum sulfate hydrate serves a versatile role as both a starch modifier and firming agent. In the food industry, it is utilized to maintain the firmness of pickles and vegetables during processing and acts as a processing aid in the preparation of baked goods, gelatins, and puddings. This compound, known chemically as Al2(SO4)3·12H2O, is a water-soluble white powder that is produced through the reaction of kaolin or nepheline with sulfuric acid. Beyond its applications in food processing, aluminum sulfate is significant in various industrial processes. It is utilized in non-metallic flotation and molybdenum circuits, particularly for the depression of talc at a neutral pH. Additionally, it functions in the treatment of talcous nickel ores when combined with carboxyl methyl cellulose, and exerts a depressing effect on minerals like calcite, dolomite, and barite. In fluoride flotation, aluminum sulfate acts as a co-depressant for barite-containing ores.
Storage	Room Temperature
EC Number	233-135-0
MDL Number	MFCD00149138

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