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Aluminum sulfate

99.99% trace metals basis

• Synonym(s): Aluminium sulphate, Aluminum alum, Dialuminum sulfate, dialuminum trisulfate
• Linear Formula: Al₂(SO₄)₃
• CAS Number: 10043-01-3
• Molecular Weight: 342.15
• EC Number: 233-135-0
• MDL number: MFCD00003423
• UNSPSC Code: 12352302
• PubChem Substance ID: 24852105
• NACRES: NA.23

Properties

• assay: 99.99% trace metals basis
• form: powder and chunks
• impurities: ≤150.0 ppm Trace Metal Analysis
• mp: 770 °C (dec.) (lit.)
• density: 2.71 g/mL at 25 °C (lit.)
• application(s): battery manufacturing
• SMILES string: [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O
• InChI: 1S/2Al.3H2O4S/c;;3*1-5(2,3)4/h;;3*(H2,1,2,3,4)/q2*+3;;;/p-6
• InChI key: DIZPMCHEQGEION-UHFFFAOYSA-H

Description

General description

Aluminum sulfate is a white crystalline solid that is highly soluble in water. It is thermally stable and has the ability to act as a coagulant and flocculant. It is widely used in the field of solar cells, water treatment and batteries.

Application

Aluminum sulfate can be used:

• As a surface modification agent/co-adsorbent for dye sensitizers in solar cell. It improves the surface of photoelectrode and purify dye solution through flocculation.
• As an electrolyte additive for lead-acid batteries to effectively inhibit the passivation of electrodes. It helps to slow down cathode sulfation and improve the reversibility of the electrode reaction.
• To prepare aqueous electrolyte for high energy aluminum electrochemical cells. It helps to form artificial solid electrolyte interphase to attain high specific energy.

Safety Information

• pictograms: GHS05
• signalword: Danger
• hcodes: H290,H318
• pcodes: P234 - P280 - P305 + P351 + P338 - P390
• Hazard Classifications: Eye Dam. 1 - Met. Corr. 1
• Storage Class: 8B - Non-combustible corrosive hazardous materials
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Gloves