Benzo-b-fluoranthene Type: O
CAS No. 205992  
Physical Properties Value Reference
Molecular Weight (g/mol) 252.31528 TR
Solubility @ 20-25 degC (mg/L) 0.0015 TR
Vapor pressure @ 20-25 degC (mmHG) 8.06e-008 TR
Henry's Law constant @ 20 degC 0.00049884 TR
Sorption coefficient (log L/kg) Koc 6.08 TR
Octanol-water partition coefficient (log L/kg) 6.109 TR
Diffusion coefficient in air (cm^2/s) 0.0226 TR
Diffusion coefficient in water (cm^2/s) 5.56e-006 TR
     
Miscellaneous Parameters Value Reference
Relative bioavailability factor (-) 1 T
Analytical Detection Limits:
Water (mg/L) 0.01 S2
Soil (mg/kg) 0.66 S2
First-order decay half lives (days):
Saturated zone 1220  
Unsaturated zone 1220 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]) 0.73 TR
Inhalation unit risk factor (1/[ug/m^3]) 8.8e-005 TR
Oral reference dose (mg/kg/day) - -
Inhalation reference conc. (mg/m^3) - -
     
Dermal Exposure Value Reference
Dermal adsorption fraction (-) 0.13 TR
Gastrointestinal adsorption fraction (-) 0.89 TR
Dermal permeability coefficient (cm/hr) 0.81 D
Lag time for dermal exposure (hr) 2.2 D
Critical dermal exposure time (hr) 10  
Relative contribution of perm. coeff. (-) 46  
     
Regulatory Standards Value Reference
Primary MCL - -
Secondary MCL - -
Drinking Water MCLs (mg/L):
Occupational Air PEL/TWA (mg/m^3) - -
Surface water quality criteria (mg/L)
Aquatic life protection: Fresh water biota - -
Aquatic life protection: Marine biota - -
Human health: Drinking / freshwater fish 2.8e-006 E
Human health: Fresh water fishing only 3.1e-005 E
Human health: Salt water fishing only 3.1e-005 E
     
LAST UPDATE: Friday, 05 August 2011