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1,1,2-Trichloroethane 1,1,2-trichloroethane-3D-vdW.png
CAS number 79-00-5 YesY
PubChem 6574
ChemSpider 6326 YesY
KEGG C19536 YesY
ChEBI CHEBI:36018 YesY
Jmol-3D images Image 1
Image 2
Molecular formula C2H3Cl3
Molar mass 133.40 g/mol
Density 1.435 g/cm3
Melting point −37 °C (−35 °F; 236 K)
Boiling point 110 to 115 °C (230 to 239 °F; 383 to 388 K)
NFPA 704
Flammability code 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g., canola oil Health code 3: Short exposure could cause serious temporary or residual injury. E.g., chlorine gas Reactivity (yellow): no hazard code Special hazards (white): no codeNFPA 704 four-colored diamond
Related compounds
Related compounds 1,1,1-Trichloroethane; Trichloroethylene
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

1,1,2-Trichloroethane, or 1,1,2-TCA, is an organochloride solvent with the molecular formula C2H3Cl3. It is a colourless, sweet-smelling liquid that does not dissolve in water, but is soluble in most organic solvents. It is an isomer of 1,1,1-trichloroethane.

It is used as a solvent and as an intermediate in the synthesis of 1,1-dichloroethane.

1,1,2-TCA is a central nervous system depressant and inhalation of vapors may cause dizziness, drowsiness, headache, nausea, shortness of breath, unconsciousness, or cancer.[citation needed]


Trichloroethane may be harmful by inhalation, ingestion and skin contact. It is a respiratory and eye irritant. Although no definitive studies currently exist, trichloroethane should be treated as a potential carcinogen since laboratory evidence suggests that low molecular weight chlorinated hydrocarbons may be carcinogenic.[1]

The Occupational Safety and Health Administration and National Institute for Occupational Safety and Health have set occupational exposure limits to 1,1,2-Trichloroethane at 10 ppm over an eight hour time-weighted average.[2] It is considered to be a potential occupational carcinogen.