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243361

Sigma-Aldrich

硫酸铬(III)钾 十二水合物

ACS reagent, ≥98%

同義詞:

硫酸钾铬(III) 十二水合物, 铬明矾

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About This Item

線性公式:
CrK(SO4)2 · 12H2O
CAS號碼:
分子量::
499.40
EC號碼:
MDL號碼:
分類程式碼代碼:
12352302
PubChem物質ID:
NACRES:
NB.24

等級

ACS reagent

化驗

≥98%
98.0-102.0% (ACS specification)

形狀

crystals

反應適用性

reagent type: catalyst
core: chromium

雜質

≤0.01% insolubles

mp

89 °C (lit.)

負離子痕跡

chloride (Cl-): ≤0.002%

正離子痕跡

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

SMILES 字串

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 密鑰

ZFVHBEKVAITXHW-UHFFFAOYSA-J

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一般說明

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。

應用

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。

象形圖

Exclamation mark

訊號詞

Warning

危險聲明

危險分類

Eye Irrit. 2 - Skin Irrit. 2

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3


分析證明 (COA)

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