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Sigma-Aldrich

Aluminum potassium sulfate dodecahydrate

SAJ first grade, 99.0-102.0%

Synonym(s):

Alum, Potassium alum, Potassium aluminum sulfate dodecahydrate

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About This Item

Linear Formula:
AlK(SO4)2 · 12H2O
CAS Number:
7784-24-9
Molecular Weight:
474.39
EC Number:
233-141-3
MDL number:
MFCD00149143
UNSPSC Code:
12352311
PubChem Substance ID:
329747245

grade

SAJ first grade

Assay

99.0-102.0%

form

solid

reaction suitability

reagent type: catalyst
core: aluminum

availability

available only in Japan

pH

3.3 (94.88 g/L)

mp

92 °C (lit.)

density

1.757 g/mL at 25 °C (lit.)

SMILES string

O.O.O.O.O.O.O.O.O.O.O.O.[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O

InChI

1S/Al.K.2H2O4S.12H2O/c;;2*1-5(2,3)4;;;;;;;;;;;;/h;;2*(H2,1,2,3,4);12*1H2/q+3;+1;;;;;;;;;;;;;;/p-4

InChI key

GNHOJBNSNUXZQA-UHFFFAOYSA-J

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Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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