A

Aluminum sulfate

IUPAC: dialuminum;trisulfate

Al2O12S3 Salts CAS 10043-01-3
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Quick Reference
Formula / NotationAl2O12S3
CAS Number10043-01-3
Molecular Weight342.2
Melting Point3.9 °F (USCG, 1999)
Boiling Point214 °F at 760 mmHg (USCG, 1999)
Density2.71 at 68 °F 1.7 at 20 °C (USCG, 1999) - Denser than water; will sink
Solubility86.9 g/ 100 ml
AppearanceAnhydrous aluminum sulfate is a white crystalline solid. Aluminum sulfate is also obtained as an 18-hydrate Al2(SO4)3.18H2O. Both forms are soluble in water, noncombustible, and nontoxic. The prima...
Also Known Asdialuminum;trisulfate; 10043-01-3; Aluminium sulfate; Dialuminum trisulfate; Aluminum sulfate anhydrous; Aluminium sulphate; Dialuminum sulfate; Aluminum alum; Sulfuric acid, aluminum salt; Filter Alum
CategorySalts

What is Aluminum sulfate?

Aluminium sulfate (anhydrous) is an aluminium sulfate that contains no water of crystallisation.

Formula & Notation

Al2O12S3

IUPAC Name: dialuminum;trisulfate

Other Names / Synonyms: dialuminum;trisulfate; 10043-01-3; Aluminium sulfate; Dialuminum trisulfate; Aluminum sulfate anhydrous; Aluminium sulphate; Dialuminum sulfate; Aluminum alum; Sulfuric acid, aluminum salt; Filter Alum

Properties & Characteristics

Appearance: Anhydrous aluminum sulfate is a white crystalline solid. Aluminum sulfate is also obtained as an 18-hydrate Al2(SO4)3.18H2O. Both forms are soluble in water, noncombustible, and nontoxic. The prima.... Molecular formula: Al2O12S3. Molecular weight: 342.2 g/mol. Boiling point: 214 °F at 760 mmHg (USCG, 1999). Melting point: 3.9 °F (USCG, 1999). Density: 2.71 at 68 °F 1.7 at 20 °C (USCG, 1999) - Denser than water; will sink. Solubility: 86.9 g/ 100 ml. Vapor pressure: Esentially zero..

Physical Data

PropertyValue
Melting Point3.9 °F (USCG, 1999)
Boiling Point214 °F at 760 mmHg (USCG, 1999)
Density2.71 at 68 °F 1.7 at 20 °C (USCG, 1999) - Denser than water; will sink
Molecular Weight342.2
Solubility86.9 g/ 100 ml
AppearanceAnhydrous aluminum sulfate is a white crystalline solid. Aluminum sulfate is also obtained as an 18-hydrate Al2(SO4)3.18H2O. Both forms are soluble in water, noncombustible, and nontoxic. The prima...

Uses & Applications

Used in food preservation, water treatment, chemical synthesis, fertilizers, and pharmaceutical applications.

Safety Information

Irritant or toxic depending on specific salt. Some salts are oxidising agents or toxic to aquatic environments. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Aluminum sulfate
Formula Al2O12S3
CAS Number 10043-01-3
Molecular Weight 342.2
Category Salts
Index All "A" terms
Synonyms dialuminum;trisulfate; 10043-01-3; Aluminium sulfate; Dialuminum trisulfate; Aluminum sulfate anhydrous; Aluminium sulphate; Dialuminum sulfate; Aluminum alum; Sulfuric acid, aluminum salt; Filter Alum

Frequently Asked Questions

Aluminium sulfate (anhydrous) is an aluminium sulfate that contains no water of crystallisation.

More "A" Terms

4-Aminobenzoic acid C7H7NO2 Absolute Entropy of a Substance S° Absolute Zero 0 K = −273.15°C Absorption Spectrum E = hν; A = εlc Accuracy Acenaphthene C12H10 Acetaldehyde C2H4O Acetic Acid CH₃COOH (C₂H₄O₂) Acetic anhydride C4H6O3 Acetone C3H6O Acetonitrile C2H3N Acetophenone C8H8O
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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.

AllChemicals.info — The Online Chemical Glossary | https://allchemicals.info/chemical/aluminum-sulfate

For educational purposes only. Verify all information before use.