Carbon tetrachloride Type: O
CAS No. 56235  
Physical Properties Value Reference
Molecular Weight (g/mol) 153.823 TR
Solubility @ 20-25 degC (mg/L) 805 TR
Vapor pressure @ 20-25 degC (mmHG) 112 TR
Henry's Law constant @ 20 degC 1.197216 TR
Sorption coefficient (log L/kg) Koc 2.27 TR
Octanol-water partition coefficient (log L/kg) 2.4421 TR
Diffusion coefficient in air (cm^2/s) 0.078 TR
Diffusion coefficient in water (cm^2/s) 8.8e-006 TR
Miscellaneous Parameters Value Reference
Relative bioavailability factor (-) 1 T
Analytical Detection Limits:
Water (mg/L) 0.001 S
Soil (mg/kg) 0.005 S
First-order decay half lives (days):
Saturated zone 360  
Unsaturated zone 360 H
Soil-to-plant biotransfer factor (0):
Above ground veg. -  
Below ground veg. - -
Toxicity Data Value Reference
EPA weight of evidence B2  
Carcinogen TRUE  
Oral slope factor (1/[mg/kg/day]) 0.13 TR
Inhalation unit risk factor (1/[ug/m^3]) 1.5e-005 TR
Oral reference dose (mg/kg/day) 0.0007 TR
Inhalation reference conc. (mg/m^3) 0.002 TR
Dermal Exposure Value Reference
Dermal adsorption fraction (-) 0 TR
Gastrointestinal adsorption fraction (-) 0.65 TR
Dermal permeability coefficient (cm/hr) 0.022 D
Lag time for dermal exposure (hr) 0.76 D
Critical dermal exposure time (hr) 1.8  
Relative contribution of perm. coeff. (-) 0.068  
Regulatory Standards Value Reference
Primary MCL 0.005 MC
Secondary MCL - -
Drinking Water MCLs (mg/L):
Occupational Air PEL/TWA (mg/m^3) 62.9 OS
Surface water quality criteria (mg/L)
Aquatic life protection: Fresh water biota - -
Aquatic life protection: Marine biota - -
Human health: Drinking / freshwater fish 0.00376 T3
Human health: Fresh water fishing only 0.0084 T3
Human health: Salt water fishing only 0.0056 T3
LAST UPDATE: Sunday, 29 November -0001