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Chromium(III) potassium sulfate dodecahydrate

SIGALD/243361 - ACS reagent, ≥98%

Synonym: Chrome alum; Potassium chromium(III) sulfate dodecahydrate

CAS Number: 7788-99-0
Empirical Formula (Hill Notation): CrKO8S2 · 12H2O
Molecular Weight: 499.40
EC Number: 233-401-6
MDL Number: MFCD00149917
Linear Formula: CrK(SO4)2 · 12H2O
Product Type: Chemical
Catalog Number PKG Qty. Price Quantity
45-243361-5G 5 g
 $70.40
1/EA		 Add To Favorites
45-243361-100G 100 g
 $90.90
1/EA		 Add To Favorites
45-243361-500G 500 g
 $351.00
1/EA		 Add To Favorites
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.

This image depicts SKU: 243361-100G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.

This image depicts SKU: 243361-500G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.

This image depicts SKU: 243361-5G

 

anion traces chloride (Cl-): ≤0.002%
assay ≥98%
  98.0-102.0% (ACS specification)
cation traces Al: ≤0.02%
  Fe: ≤0.01%
  heavy metals (as Pb): ≤0.01%
  NH4+: ≤0.01%
form crystals
grade ACS reagent
impurities ≤0.01% insolubles
InChI 1S/Cr.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 ZFVHBEKVAITXHW-UHFFFAOYSA-J
mp 89 °C (lit.)
Quality Level 200 
reaction suitability reagent type: catalyst
core: chromium
SMILES string O.O.O.O.O.O.O.O.O.O.O.O.[K+].[Cr+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O
Application: Chromium(III) potassium sulfate dodecahydrate [KCr(SO4)2.12H2O] has been used for the dissolution of gelatin in various studies.
It may be used as a starting material in the synthesis of quasi-monodisperse spherical core-shell particles of Cr/α-Cr2O3 to be used as solar absorbers.
General description: Chromium(III) potassium sulfate dodecahydrate (Potassium chromium(III) sulfate dodecahydrate, Chrome alum) is widely used chemical in dyeing and textile industry. It can be synthesized by reacting sulfur dioxide with potassium dichromate (dissolved in sulfuric acid) at -38°C.
Packaging: 5, 100, 500 g in poly bottle
Purity ≥98%; 98.0-102.0% (ACS specification)
mp 89 °C (lit.)
UNSPSC 12352302

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