Chemistry:1,1,1,2-Tetrachloroethane

Short description: Chemical compound

1,1,1,2-Tetrachloroethane

Names
Preferred IUPAC name 1,1,1,2-Tetrachloroethane
Other names R-130a; acetylidene tetrachloride, asymmetrical tetrachloroethane
Identifiers
CAS Number	630-20-6 Y
3D model (JSmol)	Interactive image Interactive image
ChEBI	CHEBI:34024 Y
ChEMBL	ChEMBL155816 Y
ChemSpider	11911 Y
KEGG	C14705 Y
PubChem CID	12418
UNII	0S5MKE574X Y
InChI InChI=1S/C2H2Cl4/c3-1-2(4,5)6/h1H2 Y Key: QVLAWKAXOMEXPM-UHFFFAOYSA-N Y InChI=1/C2H2Cl4/c3-1-2(4,5)6/h1H2 Key: QVLAWKAXOMEXPM-UHFFFAOYAE
SMILES C(C(Cl)(Cl)Cl)Cl ClCC(Cl)(Cl)Cl
Properties
Chemical formula	C2H2Cl4
Molar mass	167.848 g/mol
Appearance	Clear liquid
Density	1.5532 g/cm3
Melting point	−70.2 °C (−94.4 °F; 203.0 K)
Boiling point	130.5 °C (266.9 °F; 403.6 K)
Solubility in water	0.1% (20°C)
Vapor pressure	14 mmHg (25°C)
Hazards
NIOSH (US health exposure limits):
PEL (Permissible)	none
REL (Recommended)	Handle with caution in the workplace.
IDLH (Immediate danger)	N.D.
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

Tracking categories (test):

• PairSizeSet

1,1,1,2-Tetrachloroethane is a chlorinated hydrocarbon. It is a colorless liquid with a sweet chloroform-like odor. It is used as a solvent and in the production of wood stains and varnishes. It is an isomer of 1,1,2,2-Tetrachloroethane

Production

1,1,1,2-Tetrachloroethane can be obtained by a two-step addition reaction of acetylene with chlorine (via dichloroethene), but this mainly produces 1,1,2,2-tetrachloroethane.

[math]\ce{ C2H2 + Cl2 -> C2H2Cl2 }[/math] [math]\ce{ C2H2Cl2 + Cl2 -> C2H2Cl4 }[/math]

It can be obtained directly by chlorination of 1,1,2-trichloroethane:

[math]\ce{ CHCl2-CH2Cl + Cl2 -> CHCl2-CCl3 + HCl }[/math]

Safety

IARC has classified 1,1,1,2-tetrachloroethane as a possible carcinogen for humans in 2014.

See also

• 1,1,2,2-Tetrachloroethane