221783

Sigma-Aldrich

Copper(II) chloride dihydrate

reagent grade

Synonym(s):
Cupric chloride dihydrate
Linear Formula:
CuCl2 · 2H2O
CAS Number:
Molecular Weight:
170.48
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.55

Quality Level

grade

reagent grade

vapor density

>1 (vs air)

assay

35.0-38.0% Cu basis (EDTA titration)

form

crystals

pH

3-3.8

mp

100 °C (dec.) (lit.)

SMILES string

Cl[Cu]Cl.[H]O[H].[H]O[H]

InChI

1S/2ClH.Cu.2H2O/h2*1H;;2*1H2/q;;+2;;/p-2

InChI key

MPTQRFCYZCXJFQ-UHFFFAOYSA-L

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Application

Copper(II) chloride dihydrate may be used in the following processes:
  • As a recoverable promoter for the conversion of oximes to carbonyl compounds under mild reaction conditions.
  • To catalyze Biginelli condensation of aldehyde, β-ketoester and urea or thiourea to form dihydropyrimidinones under solvent-free and microwave irradiations.
  • Along with stannous chloride for the allylation of aldehydes.

Packaging

2.5 kg in poly bottle
100, 500 g in poly bottle

Signal Word

Danger

RIDADR

UN 2802 8 / PGIII

WGK Germany

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

A novel Cu-catalysed three-component one-pot synthesis of dihydropyrimidin-2 (1H)-ones using microwaves under solvent-free conditions
Gohain M, et al
Synlett, 2004(02), 0235-0238 (2004)
A novel copper (II)/tin (II) reagent for aqueous carbonyl allylation: In situ diagnostics of reactive organometallics in water
Kundu A, et al
Organometallics, 16(22), 4796-4799 (1997)
A green chemistry method for the regeneration of carbonyl compounds from oximes by using cupric chloride dihydrate as a recoverable promoter for hydrolysis
Quan N, et al
Synlett, 2011(07), 1028-1032 (2011)
Deprotection of t-butyldimethylsiloxy (TBDMS) protecting group with catalytic copper (II) chloride dihydrate.
TAN ZP, et al.
Chinese Chemical Letters = Zhongguo Hua Xue Kuai Bao, 11(9), 753-756 (2000)
Interaction of hydrazine with copper (II) chloride in acidic solutions. Formation, spectral and magnetic properties, and structures of copper (II), copper (I), and mixed-valence species.
Brown DB, et al.
Inorganic Chemistry, 18(10), 2635-2641 (1979)

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