60151
硫酸铬(III)钾 十二水合物
puriss. p.a., ACS reagent, ≥99.0% (RT)
别名:
硫酸钾铬(III) 十二水合物, 铬明矾
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关于此项目
线性分子式:
CrK(SO4)2 · 12H2O
化学文摘社编号:
分子量:
499.40
UNSPSC Code:
12352300
PubChem Substance ID:
EC Number:
233-401-6
MDL number:
InChI key
ZFVHBEKVAITXHW-UHFFFAOYSA-J
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
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
grade
ACS reagent, puriss. p.a.
assay
≥99.0% (RT)
form
crystals
mp
89 °C (lit.)
solubility
water: soluble(lit.)
anion traces
chloride (Cl-): ≤20 mg/kg
cation traces
Al: ≤200 mg/kg, Ca: ≤100 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cu: ≤10 mg/kg, Fe: ≤100 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, NH4+: ≤100 mg/kg, Na: ≤500 mg/kg, Ni: ≤5 mg/kg, Pb: ≤50 mg/kg, Zn: ≤10 mg/kg
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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 (dissolved in sulfuric acid) at -38°C. It is widely used chemical in dyeing and textile industry.
Application
Chromium(III) potassium sulfate dodecahydrate (KCr(SO4)2.12H2O) has been used for coating the slides for microscopic studies on Periplaneta americana. It may be used in the preparation of quasi-monodisperse spherical core-shell particles of Cr/α-Cr2O3.
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2
存储类别
11 - Combustible Solids
法规信息
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O Schmitt et al.
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