Aluminum sulfate hydrate
Catalog Number
ACM17927650-2
CAS
17927-65-0
IUPAC Name
dialuminum trisulfate hydrate
Synonyms
Dialuminum trisulfate hydrate
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.
Molecular Weight
360.17
Molecular Formula
Al2H₂O13S3
Product Information
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
Storage
Room Temperature
Exact Mass
341.818
MDL Number
MFCD00149138
Monoisotopic Mass
341.818
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