243361
Sigma-Aldrich

Chromium(III) potassium sulfate dodecahydrate

ACS reagent, ≥98%

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Synonym

Chrome alum

Potassium chromium(III) sulfate dodecahydrate

Molecular Formula

CrK(SO₄)₂ · 12H₂O

Molecular Weight

499.40

CAS Number

7788-99-0

MDL number

MFCD00149917

PubChem Substance ID

24854611

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Descriptions

Packaging

100, 500 g in poly btl

5 g in glass btl

Properties

grade

ACS reagent

assay

≥98%

98.0-102.0% (ACS specification)

total impurities

≤0.01% insolubles

89 °C(lit.)

anion traces

chloride (Cl^-): ≤0.002%

cation traces

Al: ≤0.02%

Fe: ≤0.01%

NH₄⁺: ≤0.01%

heavy metals (as Pb): ≤0.01%

References

reference

Aldrich MSDS 1, 472:A / Corp MSDS 1 (1), 882:B / RegBook 1 (3), 3443:E / Sax 6, 2272

Safety

Safety Statements

22-24/25

WGK Germany

RTECS

GB6850000

Related Categories

... Routine Reagents > ACS Grade

... Catalysis and Inorganic Chemistry > Chromium

MSDS

Specification Sheet

Certificate of Analysis

More Information