Trichloroethylene
Trichloroethylene (TCE) is a halocarbon with the formula C2HCl3, commonly used as an industrial degreasing solvent. It is a clear, colourless, non-flammable, volatile liquid with a chloroform-like pleasant mild smell and sweet taste. Its IUPAC name is trichloroethene. Trichloroethylene has been sold under a variety of trade names. Industrial abbreviations include TCE, trichlor, Trike, Tricky and tri. Under the trade names Trimar and Trilene, it was used as a volatile anesthetic and as an inhaled obstetrical analgesic. It should not be confused with the similar 1,1,1-trichloroethane, which is commonly known as chlorothene.
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sample of Trichloroethylene | |||
| Names | |||
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| Preferred IUPAC name
Trichloroethene | |||
| Other names
1-Chloro-2,2-Dichloroethylene; 1,1-Dichloro-2-Chloroethylene; Acetylene Trichloride; Anamenth; HCC-1120; TCE; Trethylene; Triclene; Tri; Trico; Trilene; Trimar | |||
| Identifiers | |||
3D model (JSmol) |
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| Abbreviations | TCE | ||
| ChEBI | |||
| ChEMBL | |||
| ChemSpider | |||
| ECHA InfoCard | 100.001.062 | ||
| EC Number |
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| KEGG | |||
PubChem CID |
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| RTECS number |
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| UNII | |||
| UN number | 1710 | ||
CompTox Dashboard (EPA) |
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| Properties | |||
| C2HCl3 | |||
| Molar mass | 131.38 g·mol−1 | ||
| Appearance | Colorless liquid | ||
| Odor | pleasant, chloroform-like | ||
| Density | 1.46 g/cm3 at 20 °C | ||
| Melting point | −84.8 °C (−120.6 °F; 188.3 K) | ||
| Boiling point | 86.7 °C (188.1 °F; 359.8 K) | ||
| 1.280 g/L | |||
| Solubility | Ether, ethanol, chloroform | ||
| log P | 2.26 | ||
| Vapor pressure | 58 mmHg (0.076 atm) at 20 °C | ||
| −65.8·10−6 cm3/mol | |||
Refractive index (nD) |
1.4777 at 19.8 °C | ||
| Viscosity | 0.532 mPa·s | ||
| Pharmacology | |||
| N01AB05 (WHO) | |||
| Hazards | |||
| Occupational safety and health (OHS/OSH): | |||
Main hazards |
Acute exposure can cause dizziness and loss of consciousness, chronic exposure can increase cancer risk. Unstable in presence of light. | ||
| GHS labelling: | |||
| NFPA 704 (fire diamond) | |||
| 420 °C (788 °F; 693 K) | |||
| Explosive limits | 8-10.5% | ||
| Lethal dose or concentration (LD, LC): | |||
LD50 (median dose) |
4920 mg/kg (oral, rat), 29000 mg/kg (dermal, rabbit) | ||
LC50 (median concentration) |
8450 ppm (mouse, 4 hr) 26300 (rat, 1 hr) | ||
LCLo (lowest published) |
2900 ppm (human) 37,200 ppm (guinea pig, 40 min) 5952 ppm (cat, 2 hr) 8000 ppm (rat, 4 hr) 11,000 (rabbit) | ||
| NIOSH (US health exposure limits): | |||
PEL (Permissible) |
TWA 100 ppm C 200 ppm 300 ppm (5-minute maximum peak in any 2 hours) | ||
REL (Recommended) |
Ca | ||
IDLH (Immediate danger) |
Ca [1000 ppm] | ||
| Safety data sheet (SDS) | Mallinckrodt Baker | ||
| Legal status |
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| Related compounds | |||
Related vinyl halides |
Vinyl chloride Tetrachloroethylene | ||
Related compounds |
Chloroform 1,1,1-Trichloroethane 1,1,2-Trichloroethane | ||
| Supplementary data page | |||
| Trichloroethylene (data page) | |||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |||
TCE is classified as a volatile organic compound.
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