Tetrachloroethane, 1,1,2,2- Type: O
CAS No. 79345  
Physical Properties Value Reference
Molecular Weight (g/mol) 167.84988 TR
Solubility @ 20-25 degC (mg/L) 2970 TR
Vapor pressure @ 20-25 degC (mmHG) 5.17 TR
Henry's Law constant @ 20 degC 0.01546404 TR
Sorption coefficient (log L/kg) Koc 1.89 TR
Octanol-water partition coefficient (log L/kg) 2.1926 TR
Diffusion coefficient in air (cm^2/s) 0.071 TR
Diffusion coefficient in water (cm^2/s) 7.9e-006 TR
     
Miscellaneous Parameters Value Reference
Relative bioavailability factor (-) 1 T
Analytical Detection Limits:
Water (mg/L) 0.0005 S
Soil (mg/kg) 0.005 S
First-order decay half lives (days):
Saturated zone 45  
Unsaturated zone 45 H
Soil-to-plant biotransfer factor (0):
Above ground veg. -  
Below ground veg. - -
     
Toxicity Data Value Reference
EPA weight of evidence C  
Carcinogen TRUE  
Oral slope factor (1/[mg/kg/day]) 0.2 TR
Inhalation unit risk factor (1/[ug/m^3]) 5.8e-005 TR
Oral reference dose (mg/kg/day) 0.04 TR
Inhalation reference conc. (mg/m^3) - -
     
Dermal Exposure Value Reference
Dermal adsorption fraction (-) 0 TR
Gastrointestinal adsorption fraction (-) 0.7 TR
Dermal permeability coefficient (cm/hr) 0.009 D
Lag time for dermal exposure (hr) 0.92 D
Critical dermal exposure time (hr) 2.2  
Relative contribution of perm. coeff. (-) 0.025  
     
Regulatory Standards Value Reference
Primary MCL - -
Secondary MCL - -
Drinking Water MCLs (mg/L):
Occupational Air PEL/TWA (mg/m^3) 35 OS
Surface water quality criteria (mg/L)
Aquatic life protection: Fresh water biota - -
Aquatic life protection: Marine biota - -
Human health: Drinking / freshwater fish 0.0017 E
Human health: Fresh water fishing only 0.11 E
Human health: Salt water fishing only 0.11 E
     
LAST UPDATE: Sunday, 29 November -0001