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Merck
CN

243361

硫酸铬(III)钾 十二水合物

ACS reagent, ≥98%

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
NACRES:
NB.24
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
233-401-6
MDL number:
Assay:
≥98%, 98.0-102.0% (ACS specification)
Grade:
ACS reagent
Form:
crystals
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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

assay

≥98%, 98.0-102.0% (ACS specification)

form

crystals

reaction suitability

reagent type: catalyst
core: chromium

impurities

≤0.01% insolubles

mp

89 °C (lit.)

anion traces

chloride (Cl-): ≤0.002%

cation traces

Al: ≤0.02%, Fe: ≤0.01%, NH4+: ≤0.01%, heavy metals (as Pb): ≤0.01%

Quality Level

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Application

十二水合硫酸铬 (III) 钾 [KCr (SO 4 ) 2 。在多项研究中,12H 2 O 被用于明胶的溶解。
可作为合成 Cr/α 准单分散球形核壳粒子的起始材料-Cr 2 O 3 用作太阳能吸收剂。

General description

铬 (III) 十二水合硫酸钾(十二水合硫酸铬 (III) 钾铬矾)是广泛用于染色和纺织工业的化学品。二氧化硫与重铬酸钾(溶于硫酸)在-38℃ 下反应可合成。

pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

存储类别

11 - Combustible Solids

wgk

WGK 3


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