DEHALOCOCCOIDES AND REDUCTIVE DECHLORINATION OF CHLORINATED SOLVENTS - Bioaugmentation for Groundwater Remediation

Biomedical Engineering Reference

In-Depth Information

Table 2.2. Properties of Common Chlorinated Solvents

Liquid

Density

at 20 C

[g/cm 3 ]

Vapor

Pressure

(20 C)

[kPa]

Solubility

in H 2 O

(20 C)

[mg/L]

Solubility

in H 2 O

(20 C)

[mM]

Air Odor

Threshold

Concentration

[ppm, v/v]

MCL

[mg/L]

Tetrachloroethene C 2 Cl 4 127-18-4 165.83 1.62 1.9 200 1.2 0.723 27 0.005

Trichloroethene C 2 HCl 3 79-01-6 131.39 1.46 5.78 1,100 8.4 0.39 28 0.005

cis-1,2-Dichloroethene C 2 H 2 Cl 2 540-59-0 96.94 1.25 24.0 3,500 36.1 0.17 - 0.07

trans-1,2-Dichloroethene C 2 H 2 Cl 2 156-60-5 96.94 1.26 35.3 6,300 65.0 0.38 17 0.1

1,1,1-Trichloroethane C 2 H 3 Cl 3 71-55-6 133.41 1.34 13.3 1,290 9.7 0.70 120 0.2

1,2-Dichloroethane C 2 H 4 Cl 2 107-06-2 98.96 1.25 8.53 8,600 86.9 0.048 88 0.005

1,2-Dichloropropane C 3 H 6 Cl 2 78-87-5 112.99 1.16 29.9 2,800 24.8 0.12 0.25 0.005

Carbon tetrachloride CCl 4 56-23-5 153.82 1.59 11.9 826 5.2 1.244 96 0.005

Chloroform CHCl 3 67-66-3 119.38 1.48 21.3 8,451 66.3 0.15 85 0.08 a

Dichloromethane CH 2 Cl 2 75-09-2 84.93 1.33 47.3 16,945 153.4 0.09 250 0.005

Note: C—degree(s) Celsius; CAS—Chemical Abstract Services; g/cm 3 —gram(s) per cubic centimeter; g/mol—gram(s) per mole; K h —Henry's Law Constant; kPa—kilopascal(s);

MCL—maximum contaminant level; mg/L—miligram(s) per liter; mM—millimolar; MW—molecular weight; ppm—part(s) per million; v/v—volume per volume

a MCL for total trihalomethanes including chloroform, bromodichloromethane, chlorodibromomethane, and bromoform

Data for vapor pressure from Rossberg et al. ( 2006 )

Data for aqueous solubility are from the following sources: Huling and Weaver, 1991 ; Perry and Green, 2008 ; Schwarzenbach et al., 2003 ; Yaws, 1999 , http://www.syrres.com/

what-we-do/databaseforms.aspx

K h , Henry's Law constants (dimensionless) of chlorinated ethenes according to Gossett ( 1987 )and http://www.syrres.com/what-we-do/databaseforms.aspx

Air odor threshold concentration values from AIHA, 1989 ; Amoore and Hautala, 1983 ; Ruth, 1986 . Other sources for odor threshold data include: EPA Reference Guide to Odor

Thresholds for Hazardous Air Pollutants Listed in the Clean Air Act Amendments of 1990, March 1992, EPA/600/R-92/047 ( www.epa.gov/ttn/atw/publicat.html ) ; www.speclab.

com/compound/chemabc.htm ; www.osha.gov/SLTC/healthguidelines/index.html

MCL values according to www.epa.gov/safewater/contaminants/index.html

CAS

Number

MW

[g/mol]

Compound

Formula

K h