Ethane, 1,2-dibromo-1,2-dichloro-

• Formula: C₂H₂Br₂Cl₂
• Molecular weight: 256.751
• IUPAC Standard InChI: InChI=1S/C2H2Br2Cl2/c3-1(5)2(4)6/h1-2H Copy

  
• IUPAC Standard InChIKey: RJMDFMUPJANPGX-UHFFFAOYSA-N Copy
• CAS Registry Number: 683-68-1
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  View 3d structure (requires JavaScript / HTML 5)
• Other names: 1,2-Dibromo-1,2-dichloroethane; 1,2-Dichloro-1,2-dibromoethane; rac-1,2-Dibromo-1,2-dichloroethane
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Phase change data
  • Reaction thermochemistry data
  • IR Spectrum
  • Gas Chromatography
  • References
  • Notes
• Other data available:
  • Mass spectrum (electron ionization)
• Options:
  • Switch to calorie-based units

Phase change data

Go To: Top, Reaction thermochemistry data, IR Spectrum, Gas Chromatography, NIST Subscription Links, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos

Enthalpy of vaporization

Reaction thermochemistry data

Go To: Top, Phase change data, IR Spectrum, Gas Chromatography, NIST Subscription Links, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

 +  =

By formula: C₂H₂Cl₂ + Br₂ = C₂H₂Br₂Cl₂

IR Spectrum

Go To: Top, Phase change data, Reaction thermochemistry data, Gas Chromatography, NIST Subscription Links, References, Notes

Data compiled by: Coblentz Society, Inc.

• SOLUTION (10% CCl4 FOR 2.5-7.5, 10% CS2 FOR 7.5-16 MICRONS); Not specified, most likely a prism, grating, or hybrid spectrometer.; DIGITIZED BY NIST FROM HARD COPY; 4 cm^-1 resolution

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

• gas

Gas Chromatography

Go To: Top, Phase change data, Reaction thermochemistry data, IR Spectrum, NIST Subscription Links, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Normal alkane RI, non-polar column, custom temperature program

View large format table.

References

Go To: Top, Phase change data, Reaction thermochemistry data, IR Spectrum, Gas Chromatography, NIST Subscription Links, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Muller and Schumacher, 1939
Muller, K.L.; Schumacher, H.J., Die photochemische bromierung von transdichlorathylen und der photochemische durch brom sensibilisierte zerfall von dichlordibromathan, Z. Phys. Chem., 1939, 42, 327-345. [all data]

Waggott and Davies, 1984
Waggott, A.; Davies, I.W., Identification of organic pollutants using linear temperature programmed retention indices (LTPRIs) - Part II, 1984, retrieved from http://dwi.defra.gov.uk/research/completed-research/reports/dwi0383.pdf. [all data]

Notes

Go To: Top, Phase change data, Reaction thermochemistry data, IR Spectrum, Gas Chromatography, NIST Subscription Links, References

• Symbols used in this document:
  

  Tboil	Boiling point
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔvapH	Enthalpy of vaporization

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
• The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
• Customer support for NIST Standard Reference Data products.

© 2026 by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.

Copyright for NIST Standard Reference Data is governed by the Standard Reference Data Act.