202614
Aluminum sulfate
99.99% trace metals basis
Synonym(s):
Aluminium sulphate, Aluminum alum, Dialuminum sulfate, dialuminum trisulfate
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About This Item
Linear Formula:
Al2(SO4)3
CAS Number:
Molecular Weight:
342.15
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
233-135-0
MDL number:
Assay:
99.99% trace metals basis
Form:
powder and chunks
Quality Segment
assay
99.99% trace metals basis
form
powder and chunks
reaction suitability
core: aluminum
impurities
≤150.0 ppm Trace Metal Analysis
mp
770 °C (dec.) (lit.)
density
2.71 g/mL at 25 °C (lit.)
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
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.
Signal Word
Danger
Hazard Codes
Precautionary Statements
Hazard Classifications
Eye Dam. 1 - Met. Corr. 1
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
PPE (personal protective equipment)
dust mask type N95 (US), Eyeshields, Gloves
Storage Class
11 - Combustible Solids
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