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Copper(I) chloride

Copper(I) chloride, commonly called cuprous chloride, is the lower chloride of copper, with the formula CuCl. The substance is a white solid sparingly soluble in water, but very soluble in concentrated hydrochloric acid. Impure samples appear green due to the presence of copper(II) chloride.

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Further Information

Names

IUPAC nameCopper(I) chloride

Other names

Cuprous chloride

Identifiers

CAS Number: 7758-89-6

JSmol: Interactive image

ChEBI: CHEBI:53472

ChemSpider: 56403

ECHA InfoCard: 100.028.948

EC Number: 231-842-9

PubChem: 62652

RTECS number: GL6990000

Properties

Chemical formula: CuCl

Molar mass: 98.999 g/mol

Appearance: white powder, slightly green from oxidized impurities

Density: 4.14 g/cm3

Melting point: 423 °C (793 °F; 696 K)

Boiling point: 1,490 °C (2,710 °F; 1,760 K) (decomposes)

Solubility in water: 0.047 g/L (20 °C)

Solubility product: 1.72×10

Solubility: ethanol

Band gap: 3.25 eV (300 K, direct)

Magnetic susceptibility: -40.0·10 cm/mol−63

Refractive index: 1.930

Structure

Crystal structure: Zincblende

Space group: F3m, No. 2164

Lattice constant: = 0.54202 nm

Lattice volume: 0.1592 nm

Formula units: 4

Hazards

Safety data sheet: JT Baker

EU classification: Xn

R-phrases: R22 R50/53

S-phrases: (S2) S22 S60 S61

NFPA 704:

Flash point: Non-flammable

median dose: 140 mg/kg

NIOSH

PEL: TWA 1 mg/m (as Cu)3

REL: TWA 1 mg/m (as Cu)3

IDLH: TWA 100 mg/m (as Cu)3

Related compounds

anions: Copper(I) bromide

cations: Copper(II) chloride

Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).

Infobox references