Copper(I) chloride

Copper(I) chloride
Names
	IUPAC name Copper(I) chloride
	Other names Cuprous chloride
Identifiers
CAS Number	7758-89-6 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	8127933
ChEBI	CHEBI:53472 ;
ChemSpider	56403 ;
DrugBank	DB15535;
ECHA InfoCard	100.028.948
EC Number	231-842-9;
Gmelin Reference	13676
PubChem CID	62652;
RTECS number	GL6990000;
UNII	C955P95064 ;
CompTox Dashboard (EPA)	DTXSID5035242 ;
	InChI InChI=1S/ClH.Cu/h1H;/q;+1/p-1 Key: OXBLHERUFWYNTN-UHFFFAOYSA-M ; InChI=1/ClH.Cu/h1H;/q;+1/p-1 Key: OXBLHERUFWYNTN-REWHXWOFAC;
	SMILES Cl[Cu];
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 (Ksp)	1.72×10−7
Solubility	insoluble in ethanol, ; acetone; soluble in concentrated HCl, NH4OH
Band gap	3.25 eV (300 K, direct)
Magnetic susceptibility (χ)	−40.0·10−6 cm3/mol
Refractive index (nD)	1.930
Structure
Crystal structure	Zincblende, cF20
Space group	F43m, No. 216
Lattice constant	a = 0.54202 nm
Lattice volume (V)	0.1592 nm3
Formula units (Z)	4
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H410
Precautionary statements	P264, P270, P273, P301+P312, P330, P391, P501
NFPA 704 (fire diamond)	3 0 0
Flash point	Non-flammable
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	140 mg/kg
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 1 mg/m3 (as Cu)
REL (Recommended)	TWA 1 mg/m3 (as Cu)
IDLH (Immediate danger)	TWA 100 mg/m3 (as Cu)
Safety data sheet (SDS)	JT Baker
Related compounds
Other anions	Copper(I) fluoride; Copper(I) bromide; Copper(I) iodide
Other cations	Silver(I) chloride; Gold(I) chloride
Related compounds	Copper(II) chloride
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

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 (CuCl₂).