Names | |
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IUPAC name
Copper(I) chloride
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Other names
Cuprous chloride
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Identifiers | |
3D model (JSmol)
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8127933 | |
ChEBI | |
ChemSpider | |
DrugBank | |
ECHA InfoCard | 100.028.948 |
EC Number |
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13676 | |
PubChem CID
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RTECS number |
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
CuCl | |
Molar mass | 98.999 g/mol[1] |
Appearance | white powder, slightly green from oxidized impurities |
Density | 4.14 g/cm3[1] |
Melting point | 423 °C (793 °F; 696 K)[1] |
Boiling point | 1,490 °C (2,710 °F; 1,760 K) (decomposes)[1] |
0.047 g/L (20 °C)[1] | |
Solubility product (Ksp)
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1.72×10−7 |
Solubility | insoluble in ethanol, acetone;[1] soluble in concentrated HCl, NH4OH |
Band gap | 3.25 eV (300 K, direct)[2] |
-40.0·10−6 cm3/mol[3] | |
Refractive index (nD)
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1.930[4] |
Structure | |
Zincblende, cF20 | |
F43m, No. 216[5] | |
a = 0.54202 nm
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Lattice volume (V)
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0.1592 nm3 |
Formula units (Z)
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4 |
Hazards | |
GHS labelling: | |
Warning | |
H302, H410 | |
P264, P270, P273, P301+P312, P330, P391, P501 | |
NFPA 704 (fire diamond) | |
Flash point | Non-flammable |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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140 mg/kg |
NIOSH (US health exposure limits): | |
PEL (Permissible)
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TWA 1 mg/m3 (as Cu)[6] |
REL (Recommended)
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TWA 1 mg/m3 (as Cu)[6] |
IDLH (Immediate danger)
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TWA 100 mg/m3 (as Cu)[6] |
Safety data sheet (SDS) | JT Baker |
Related compounds | |
Other anions
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Copper(I) fluoride Copper(I) bromide Copper(I) iodide |
Other cations
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Silver(I) chloride Gold(I) chloride |
Related compounds
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Copper(II) chloride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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).