CAS 17927-65-0 Aluminum sulfate hydrate - Materials / Alfa Chemistry

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Aluminum sulfate hydrate

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Catalog Number

ACM17927650-2

CAS Number

17927-65-0

Product Name

Aluminum sulfate hydrate

Structure

Category

Salt; Electrolytes

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

Exact Mass

341.818

MDL Number

MFCD00149138

Monoisotopic Mass

341.818

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