Skip to content
[P]pubcas
Independent chemical reference Compare
Chemical substance record

Potassium aluminium sulfate

10043-67-1Al.K.2O4S258.206 g/mol
Salt and Compound WithChEBI source record

A metal sulfate composed of potassium, aluminium and sulfate ions in the ration 1:1:2. — ChEBI

Safety references

Safety documents & references

Supplier matching matters

Find the safety document for your specific supplier, product number and grade.

Find a product-specific SDS

Safety guides and government classification records are not a manufacturer’s SDS. Match supplier, product number, concentration, physical form, region and revision before using a document.

Identity & molecular properties

Source-linked values
CAS number10043-67-1ChEBI ↗
Molecular formulaAl.K.2O4SChEBI ↗
Molar mass258.206 g/molChEBI ↗
Monoisotopic mass257.8487 DaChEBI ↗
Formal charge0ChEBI ↗
ChEBI identifierCHEBI:86463ChEBI ↗

Cross-source molecular data

PubChem
Molar mass258.21 g/molPubChem ↗
Exact mass257.8487042 DaPubChem ↗

PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.

Names & structural identifiers

Copy any identifier
potassium aluminium sulfate
aluminium potassium sulfate (1/1/2)
GRLPQNLYRHEGIJ-UHFFFAOYSA-J
O=S(=O)([O-])[O-].O=S(=O)([O-])[O-].[Al+3].[K+]
InChI=1S/Al.K.2H2O4S/c;;2*1-5(2,3)4/h;;2*(H2,1,2,3,4)/q+3;+1;;/p-4

Names & synonyms

aluminium potassium sulfate (1/1/2)

Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.

Classification & relationships

ChEBI ontology

Roles recorded in ChEBI

mordantastringentflame retardant

Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.

Mass ↔ amount of substance

Calculated from sourced mass
Equivalent amount
0.00387288 mol

Uses 258.206 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions
K
Potassium · 2 atoms
38.86%
O
Oxygen · 4 atoms
31.80%
S
Sulfur · 1 atom
15.94%
Al
Aluminum · 1 atom
13.41%

Calculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.

Research & patent references

Selected source associations

Explore literature using this exact identifier.

Sources & record history

Checked 27 Sep 2026
EMBL-EBI ChEBI · CHEBI:86463

Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0

NCBI PubChem · CID 24856 · retrieved 2026-09-27

PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.