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Aluminum sulfate hydrate

Catalog Number
ACM7784318
Product Name
Aluminum sulfate hydrate
CAS
7784-31-8
  • Product Overview
  • Usage
Synonyms
Aluminium sulfate octadecahydrate, extra pure; Al2(SO4)3.18H₂O; TCS9L00G8F; I14-19744; CHEBI:74779; Patent alum; MFCD00149136; Cake alum octadecahydrate; Dialuminum sulfate octadecahydrate; Aluminium Sulfate Octadecahydrate;
IUPAC Name
dialuminum;trisulfate;octadecahydrate;
Molecular Weight
666.401g/mol
Molecular Formula
Al2H36O30S3;
Canonical SMILES
O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[Al+3].[Al+3];
InChI
InChI=1S/2Al.3H₂O4S.18H₂O/c;;3*1-5(2,3)4;;;;;;;;;;;;;;;;;;/h;;3*(H2,1,2,3,4);18*1H2/q2*+3;;;;;;;;;;;;;;;;;;;;;/p-6;
InChI Key
AMVQGJHFDJVOOB-UHFFFAOYSA-H;
Storage
Store at room temperature.
Complexity
62.2
Covalently-Bonded Unit Count
23
Exact Mass
666.008g/mol
H-Bond Acceptor
30
H-Bond Donor
18
Heavy Atom Count
35
Monoisotopic Mass
666.008g/mol
Topological Polar Surface Area
284A^2
UNII
TCS9L00G8F
Application
Aluminum sulfate hydrate serves as a versatile starch modifier and firming agent. Its primary purpose is to enhance the texture and firmness of pickles and vegetables during processing. Additionally, it acts as a processing aid in the production of baked goods, gelatins, and puddings. This compound, a white powder known for its high solubility in water, is produced through the reaction of kaolin or nepheline with sulfuric acid. Beyond its use in the food industry, aluminum sulfate hydrate is utilized in various industrial applications. It plays a significant role in non-metallic flotation processes and is an essential component in by-product molybdenum circuits, where it helps depress talc at a pH of 7. Furthermore, it aids in the suppression of talc during the treatment of talcous nickel ores when paired with carboxyl methyl cellulose. Aluminum salts, including this product, are effective in depressing minerals such as calcite, dolomite, and barite, making aluminum sulfate hydrate a valuable co-depressant in fluoride flotation procedures involving barite-containing ores.
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