For more information on the DNAPL Website, please contact:
Linda FiedlerTechnology Assessment Branch
PH: (703) 603-7194 | Email: fiedler.linda@epa.gov
Dense Nonaqueous Phase Liquids (DNAPLs)
Chemistry and Behavior
- Overview
- Policy and Guidance
- Chemistry and Behavior
-
- Environmental Occurrence
- Toxicology
- Detection and Site Characterization
- Treatment Technologies
- Conferences and Seminars
- Additional Resources
Halogenated Alkanes
Ethanes
Table 1 presents common physical/chemical properties of the profiled halogenated ethanes. All of these chemicals are expected to be highly mobile in the subsurface. None of the halogenated ethanes are expected to bioaccumulate. All of the halogenated ethanes are subject to anaerobic biodegradation. 1,2-Dichloroethane, ethylene dibromide, and 1,1,1-trichloroethane are also biodegradable in an aerobic environment (Cohen and Mercer 1993).
Common Physical/Chemical Properties of Selected Halogenated Ethanes | ||||||
|---|---|---|---|---|---|---|
| Chemical | Specific Gravity (g/cc) | Solubility (mg/L) | Vapor Pressure (mmHg) | Henry's Constant (atm-m3/mol) | Log Kow | Log Koc |
| 1,1-Dichloroethane | 1.176 | 5,500 | 230 | 4.2 e-02 | 1.76 | 1.79 |
| 1,2-Dichloroethane | 1.235 | 8,690 | 70.1 | 1.1 e-03 | 1.28-1.62 | 1.48 |
| Ethylene Dibromide | 2.179 | 4,000 | 11 | 6.5 e-04 | 1.64 | 1.76 |
| 1,1,2,2-Tetrachloroethane | 1.6 | 2,800 | 4.62 | 3.67-4.55 e-04 | 2.07 | 2.39 |
| 1,1,1-Trichloroethane | 1.339 | 1,500 | 124 | 6.3 e-03 | 2.03 | 2.49 |
| 1,1,2-Trichlorotrifluoroethane | 1.56 | 170 | 363 | 3.33 e-01 | 2.59 | 2.57 |
For references and temperatures see individual chemical profiles
For Further Information
DNAPL Site Evaluation
Cohen, R. and J. Mercer. EPA 600-R-93-022, 369 pp, 1993
Proceed to "Ethanes > Ethylene Dibromide"
Return to "Halogenated alkanes > Methanes"
