1,1,2,2-Tetrachloroethane

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1,1,2,2-Tetrachloroethane[1]
1,1,2,2-Tetrachloroethane.svg
1,1,2,2-Tetrachloroethane3D.png
1,1,2,2-tetrachloroethane3D2.png
Names
IUPAC name
1,1,2,2-Tetrachloroethane
Other names
s-Tetrachloroethane
Acetylene tetrachloride
R-130
TeCA
Identifiers
79-34-5 YesY
ChEBI CHEBI:36026 YesY
ChEMBL ChEMBL47258 YesY
ChemSpider 6342 YesY
Jmol 3D model Interactive image
KEGG C19534 N
PubChem 6591
  • InChI=1S/C2H2Cl4/c3-1(4)2(5)6/h1-2H YesY
    Key: QPFMBZIOSGYJDE-UHFFFAOYSA-N YesY
  • InChI=1/C2H2Cl4/c3-1(4)2(5)6/h1-2H
    Key: QPFMBZIOSGYJDE-UHFFFAOYAH
  • ClC(Cl)C(Cl)Cl
Properties
C2H2Cl4
Molar mass 167.848 g/mol
Appearance Colorless to pale yellow liquid[2]
Odor pungent, chloroform-like[2]
Density 1.59 g/cm3
Melting point −44 °C (−47 °F; 229 K)
Boiling point 146.5 °C (295.7 °F; 419.6 K)
1 g/350 mL
Vapor pressure 5 mmHg (20°C)[2]
Vapor pressure {{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YesYN ?)
Infobox references

1,1,2,2-Tetrachloroethane is a chlorinated derivative of ethane. It has the highest solvent power of any chlorinated hydrocarbon.[1] As a refrigerant, it is used under the name R-130.

It was once widely used as a solvent and as an intermediate in the industrial production of trichloroethylene, tetrachloroethylene, and 1,2-dichloroethylene.[3] However, 1,1,2,2-tetrachloroethane is no longer used much in the United States due to concerns about its toxicity.[4]

Chronic inhalation exposure in humans results in jaundice and an enlarged liver, headaches, tremors, dizziness, numbness, and drowsiness. The U.S. Environmental Protection Agency has classified it as a Group C possible human carcinogen.[4]

For occupational exposure limits, the Occupational Safety and Health Administration has set a permissible exposure limit for dermal exposures at 5 ppm over an eight-hour time-weighted average. The National Institute for Occupational Safety and Health has a more protective recommended exposure limit for dermal exposures at 1 ppm over an eight-hour time-weighted average.[5]

See also

References

  1. 1.0 1.1 Merck Index, 11th Edition, 9125.
  2. 2.0 2.1 2.2 Cite error: Invalid <ref> tag; no text was provided for refs named PGCH
  3. Agency for Toxic Substances and Disease Registry (ATSDR). Toxicological Profile for 1,1,2,2-Tetrachloroethane (Update). U.S. Public Health Service, U.S. Department of Health and Human Services, Atlanta, GA. 1996.
  4. 4.0 4.1 Tetrachloroethane at U.S. EPA
  5. CDC - NIOSH Pocket Guide to Chemical Hazards