1,1,1,2-Tetrachloroethane
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Chemical compound
1,1,1,2-Tetrachloroethane[1]
Preferred IUPAC name
1,1,1,2-Tetrachloroethane
Other names
R-130a; acetylidene tetrachloride, asymmetrical tetrachloroethane
- 630-20-6 checkY
3D model (JSmol)
ChEBI
- CHEBI:34024 checkY
ChEMBL
- ChEMBL155816 checkY
ChemSpider
- 11911 checkY
UNII
- 0S5MKE574X checkY
- InChI=1S/C2H2Cl4/c3-1-2(4,5)6/h1H2 checkYKey: QVLAWKAXOMEXPM-UHFFFAOYSA-N checkY
- InChI=1/C2H2Cl4/c3-1-2(4,5)6/h1H2Key: QVLAWKAXOMEXPM-UHFFFAOYAE
- C(C(Cl)(Cl)Cl)Cl
- ClCC(Cl)(Cl)Cl
Molar mass
167.84 g·mol−1
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)
0.1% (20°C)[2]
Vapor pressure
14 mmHg (25°C)[2]
NIOSH (US health exposure limits):
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Chemical compound
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
[edit ]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.
- C2H2 + Cl2 → C2H2Cl2
- C2H2Cl2 + Cl2 → C2H2Cl4
It can be obtained directly by chlorination of 1,1,2-trichloroethane:[3]
- CHCl2−CH2Cl + Cl2 → CCl3−CH2Cl + HCl
Safety
[edit ]IARC has classified 1,1,1,2-tetrachloroethane as a possible carcinogen for humans in 2014.[4]
See also
[edit ]References
[edit ]- ^ "National Pollutant Inventory Substance Profile". Archived from the original on 2007年08月29日. Retrieved 2007年07月19日.
- ^ a b c d e NIOSH Pocket Guide to Chemical Hazards. "#0597". National Institute for Occupational Safety and Health (NIOSH).
- ^ Lawrance Waddams: The Petroleum chemicals Industry, S. 175.
- ^ IARC Monograph 106 – 1,1,1,2-Tetrachloroethane, 2014