60152
Chromium(III) potassium sulfate dodecahydrate
purum p.a., ≥98.5% (RT)
Synonym(s):
Chrome alum, Potassium chromium(III) sulfate dodecahydrate
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About This Item
Linear Formula:
CrK(SO4)2 · 12H2O
CAS Number:
Molecular Weight:
499.40
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
233-401-6
MDL number:
Assay:
≥98.5% (RT)
Form:
crystals
grade
purum p.a.
Quality Segment
assay
≥98.5% (RT)
form
crystals
mp
89 °C (lit.)
anion traces
chloride (Cl-): ≤200 mg/kg
cation traces
Ca: ≤500 mg/kg, Cd: ≤50 mg/kg, Co: ≤50 mg/kg, Cu: ≤50 mg/kg, Fe: ≤200 mg/kg, Na: ≤1000 mg/kg, Ni: ≤50 mg/kg, Pb: ≤50 mg/kg, Zn: ≤50 mg/kg
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
General description
Chromium(III) potassium sulfate dodecahydrate (Potassium chromium(III) sulfate dodecahydrate, Chrome alum) is a violet colored solid. It has been synthesized by reacting sulfur dioxide with potassium dichromate (diisolved in sulfuric acid) at -38°C. It is widely used chemical in dyeing and textile industry.
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signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2
Storage Class
11 - Combustible Solids
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