Hexachloroethane

Hexachloroethane
Names
	Preferred IUPAC name Hexachloroethane
	Other names Carbon hexachloride; Ethane hexachloride; Perchloroethane; Sesquichloride of carbon;
Identifiers
CAS Number	67-72-1 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	1740341
ChEBI	CHEBI:39227 ;
ChEMBL	ChEMBL160929 ;
ChemSpider	5979 ;
ECHA InfoCard	100.000.606
EC Number	200-666-4;
Gmelin Reference	26648
KEGG	C19248 ;
PubChem CID	6214;
UNII	G30K3QQT4J ;
CompTox Dashboard (EPA)	DTXSID7020689 ;
	InChI InChI=1S/C2Cl6/c3-1(4,5)2(6,7)8 Key: VHHHONWQHHHLTI-UHFFFAOYSA-N ; InChI=1/C2Cl6/c3-1(4,5)2(6,7)8 Key: VHHHONWQHHHLTI-UHFFFAOYAD;
	SMILES ClC(Cl)(Cl)C(Cl)(Cl)Cl;
Properties
Chemical formula	C2Cl6
Molar mass	236.72 g·mol−1
Appearance	colorless crystals
Odor	camphor-like
Density	2.091 g/mL at 25 °C
Melting point	sublimes
Boiling point	183 to 185 °C (361 to 365 °F; 456 to 458 K)
Solubility in water	0.005% (22.2 °C)
Vapor pressure	0.2 millimetres of mercury (27 Pa) (20 °C)
Magnetic susceptibility (χ)	−112.7·10−6 cm3/mol
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Probable carcinogen, dangerous central nervous system depressant
NFPA 704 (fire diamond)	2 0 0
Flash point	noncombustible
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	4460 mg/kg (rat, oral); 4970 mg/kg (guinea pig, oral)
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 1 ppm (10 mg/m3) [skin]
REL (Recommended)	Ca TWA 1 ppm (10 mg/m3) [skin]
IDLH (Immediate danger)	Ca [300 ppm]
Related compounds
Related compounds	Carbon tetrachloride; Octachloropropane; Ethane; Dichloroacetylene; Tetrachloroethylene; Hexafluoroethane; Tetrachloro-1,1-difluoroethane; Tetrachloro-1,2-difluoroethane; Hexabromoethane; Hexaiodoethane;
	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

Hexachloroethane (perchloroethane) is an organochlorine compound with the chemical formula C₂Cl₆. Its structure is Cl₃C−CCl₃. It is a white or colorless solid at room temperature with a camphor-like odor. It has been used by the military in smoke compositions, such as base-eject smoke munitions (smoke grenades).

Hexachloroethane was discovered along with carbon tetrachloride by Michael Faraday in 1820. Faraday obtained it by chlorinating ethylene.

Names


Preferred IUPAC name Hexachloroethane
Other names Carbon hexachloride Ethane hexachloride Perchloroethane Sesquichloride of carbon
Identifiers
CAS Number	67-72-1^Y
3D model (JSmol)	Interactive image
Beilstein Reference	1740341
ChEBI	CHEBI:39227^Y
ChEMBL	ChEMBL160929^Y
ChemSpider	5979^Y
ECHA InfoCard	100.000.606
EC Number	200-666-4
Gmelin Reference	26648
KEGG	C19248^Y
PubChem CID	6214
UNII	G30K3QQT4J^Y
CompTox Dashboard (EPA)	DTXSID7020689
InChI InChI=1S/C2Cl6/c3-1(4,5)2(6,7)8^Y Key: VHHHONWQHHHLTI-UHFFFAOYSA-N^Y InChI=1/C2Cl6/c3-1(4,5)2(6,7)8 Key: VHHHONWQHHHLTI-UHFFFAOYAD
SMILES ClC(Cl)(Cl)C(Cl)(Cl)Cl
Properties
Chemical formula	C₂Cl₆
Molar mass	236.72 g·mol⁻¹
Appearance	colorless crystals
Odor	camphor-like
Density	2.091 g/mL at 25 °C
Melting point	sublimes
Boiling point	183 to 185 °C (361 to 365 °F; 456 to 458 K)
Solubility in water	0.005% (22.2 °C)
Vapor pressure	0.2 millimetres of mercury (27 Pa) (20 °C)
Magnetic susceptibility (χ)	−112.7·10⁻⁶ cm³/mol
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Probable carcinogen, dangerous central nervous system depressant
NFPA 704 (fire diamond)	2 0 0
Flash point	noncombustible
Lethal dose or concentration (LD, LC):
LD₅₀ (median dose)	4460 mg/kg (rat, oral) 4970 mg/kg (guinea pig, oral)
NIOSH (US health exposure limits):
PEL (Permissible)	TWA 1 ppm (10 mg/m³) [skin]
REL (Recommended)	Ca TWA 1 ppm (10 mg/m³) [skin]
IDLH (Immediate danger)	Ca [300 ppm]
Related compounds
Related compounds	Carbon tetrachloride Octachloropropane Ethane Dichloroacetylene Tetrachloroethylene Hexafluoroethane Tetrachloro-1,1-difluoroethane Tetrachloro-1,2-difluoroethane Hexabromoethane Hexaiodoethane
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) Infobox references