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Key Documents

61174

Sigma-Aldrich

Copper(II) chloride dihydrate

puriss. p.a., ACS reagent, ≥99.0% (RT)

Synonym(s):

Cupric chloride dihydrate

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About This Item

Linear Formula:
CuCl2 · 2H2O
CAS Number:
Molecular Weight:
170.48
EC Number:
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:

grade

ACS reagent
puriss. p.a.

vapor density

>1 (vs air)

assay

≥99.0% (RT)

impurities

≤0.005% total nitrogen (N)

pH

3.0-3.8 (25 °C, 50 mg/mL in H2O)

mp

100 °C (dec.) (lit.)

anion traces

sulfate (SO42-): ≤50 mg/kg

cation traces

As: ≤1 mg/kg
Ca: ≤20 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Fe: ≤50 mg/kg
K: ≤50 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Na: ≤200 mg/kg
Ni: ≤5 mg/kg
Pb: ≤20 mg/kg

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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Other Notes

A -D suffix exists for administrative purposes only.
All -D packages are 100% the same product, same quality, same specification as the package sizes previously sold without a -D.

signalword

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 2 - Eye Dam. 1 - Skin Irrit. 2

Storage Class

8B - Non-combustible corrosive hazardous materials

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


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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)
An X-ray refinement of the crystal structure of copper (II) chloride dihydrate.
Engberg ?.
Acta Chemica Scandinavica, 24(10), 6-6 (1970)
Regeneration of carbonyl compounds from semicarbazones by copper (II) chloride dihydrate.
Ram RN and Varsha K.
Tetrahedron Letters, 32(41), 5829-5832 (1991)
Kenji Funaki et al.
Organic letters, 14(24), 6186-6189 (2012-12-12)
Direct arylation of thiophenes and benzothiophenes with aryltrimethylsilanes was effectively catalyzed by PdCl(2)(MeCN)(2) in the presence of CuCl(2) as an oxidant. The reaction preferentially occurred at the β-position of both thiophenes and benzothiophenes.

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