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237086

Sigma-Aldrich

Aluminum potassium sulfate dodecahydrate

ACS reagent, ≥98%

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Synonym(s):
Alum, Potassium alum, Potassium aluminum sulfate dodecahydrate
Linear Formula:
AlK(SO4)2 · 12H2O
CAS Number:
Molecular Weight:
474.39
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NB.24

grade

ACS reagent

Quality Level

assay

≥98%
98.0-102.0% (ACS specification)

form

powder or crystals

reaction suitability

reagent type: catalyst
core: aluminum

impurities

≤0.005% insolubles

pH

3.3 (94.88 g/L)

mp

92 °C (lit.)

density

1.757 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤5 ppm

cation traces

Fe: ≤0.001%
NH4+: ≤0.005%
Na: ≤0.02%
heavy metals: ≤0.001% (by ICP)

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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1 of 4

This Item
A6435A721031242
vibrant-m

237086

Aluminum potassium sulfate dodecahydrate

Essential Grade
vibrant-m

A6435

Aluminum potassium sulfate dodecahydrate

Essential+ Grade
vibrant-m

A7210

Aluminum potassium sulfate dodecahydrate

Premium Grade
vibrant-m

31242

Aluminum potassium sulfate dodecahydrate

Essential Grade
Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

assay

≥98%, 98.0-102.0% (ACS specification)

assay

≥98%

assay

≥98.0%

assay

≥99.5%

impurities

≤0.005% insolubles

impurities

-

impurities

≤0.0005% Phosphorus (P), ≤0.005% Insoluble matter

impurities

≤0.005% ammonium (NH4)

cation traces

Fe: ≤0.001%, Na: ≤0.02%, NH4+: ≤0.005%, heavy metals: ≤0.001% (by ICP)

cation traces

-

cation traces

Ca: ≤0.0005%, Cu: ≤0.0005%, Fe: ≤0.001%, Mg: ≤0.005%, NH4+: ≤0.005%, Na: ≤0.02%, Pb: ≤0.001%, Zn: ≤0.0005%

cation traces

As: ≤2 mg/kg, Cd: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, Na: ≤100 mg/kg, Pb: ≤10 mg/kg

grade

ACS reagent

grade

-

grade

-

grade

ACS reagent, puriss. p.a.

Application

Aluminum potassium sulfate dodecahydrate has been used:
  • to prepare Mayer′s hematoxylin solution for staining of lung sections and tibialis anterior muscle sections
  • to sensitize experimental mice and establish the allergic rhinitis (AR) mouse model
  • to stain mammary glands for its whole-mount analysis

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1


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Bio-protocol, 7(10) (2017-07-29)
Muscle function is determined by its structure and fiber type composition. Here we describe a protocol to examine muscle histology and myofiber types using hematoxylin and eosin (H&E) and immunofluorescence staining, respectively. H&E stain nucleus in blue and cytoplasm in
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Growth rates of aluminum potassium sulfate crystals in aqueous solutions.
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Industrial & Engineering Chemistry Fundamentals, 9(2), 276-283 (1970)
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Journal of mammary gland biology and neoplasia, 23(1-2), 43-58 (2018-03-27)
Studies in rodents have shown that dietary modifications as mammary glands (MG) develop, regulates susceptibility to mammary tumor initiation. However, the effects of dietary PUFA composition on MGs in adult life, remains poorly understood. This study investigated morphological alterations and
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