243361

Chromium(III) potassium sulfate dodecahydrate

ACS reagent, ≥98%

• Sinónimos: Chrome alum, Potassium chromium(III) sulfate dodecahydrate
• Fórmula lineal: CrK(SO₄)₂ · 12H₂O
• Número de CAS: 7788-99-0
• Peso molecular: 499.40
• Número CE: 233-401-6
• Número MDL: MFCD00149917
• Código UNSPSC: 12352302
• ID de la sustancia en PubChem: 329752454
• NACRES: NB.24

Propiedades

• grado: ACS reagent
• Análisis: ≥98%; 98.0-102.0% (ACS specification)
• formulario: crystals
• idoneidad de la reacción: reagent type: catalyst; core: chromium
• impurezas: ≤0.01% insolubles
• mp: 89 °C (lit.)
• trazas de anión: chloride (Cl^-): ≤0.002%
• trazas de catión: Al: ≤0.02%; Fe: ≤0.01%; NH₄⁺: ≤0.01%; heavy metals (as Pb): ≤0.01%
• cadena SMILES: 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
• 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
• Clave InChI: ZFVHBEKVAITXHW-UHFFFAOYSA-J

Descripción

Descripción general

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.

Aplicación

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.

Información de seguridad

• Pictogramas: GHS07
• Palabra de señalización: Warning
• Frases de peligro: H315,H319
• Consejos de prudencia: P264 - P280 - P302 + P352 - P305 + P351 + P338 - P332 + P313 - P337 + P313
• Clasificaciones de peligro: Eye Irrit. 2 - Skin Irrit. 2
• Código de clase de almacenamiento: 11 - Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 3