243361

Chromium(III) potassium sulfate dodecahydrate

ACS reagent, ≥98%

• 동의어(들): Chrome alum, Potassium chromium(III) sulfate dodecahydrate
• Linear Formula: CrK(SO₄)₂ · 12H₂O
• CAS Number: 7788-99-0
• Molecular Weight: 499.40
• EC Number: 233-401-6
• MDL number: MFCD00149917
• UNSPSC 코드: 12352302
• PubChem Substance ID: 329752454
• NACRES: NB.24

속성

• Grade: ACS reagent
• Quality Level: 200
• 분석: ≥98%; 98.0-102.0% (ACS specification)
• 양식: crystals
• 반응 적합성: reagent type: catalyst; core: chromium
• 불순물: ≤0.01% insolubles
• mp: 89 °C (lit.)
• 음이온 미량물: chloride (Cl^-): ≤0.002%
• 양이온 미량물: Al: ≤0.02%; Fe: ≤0.01%; NH₄⁺: ≤0.01%; heavy metals (as Pb): ≤0.01%
• 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
• 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

설명

일반 설명

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.

애플리케이션

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.

안전성 정보

• 픽토그램: GHS07
• 신호어: Warning
• 유해 및 위험 성명서: H315,H319
• 예방조치 성명서: P264 - P280 - P302 + P352 - P305 + P351 + P338 - P332 + P313 - P337 + P313
• Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3