Methanol Type: O
CAS No. 67561  
Physical Properties Value Reference
Molecular Weight (g/mol) 32.04216 TR
Solubility @ 20-25 degC (mg/L) 1000000 TR
Vapor pressure @ 20-25 degC (mmHG) 122 TR
Henry's Law constant @ 20 degC 0.0001937162 TR
Sorption coefficient (log L/kg) Koc -0.74 TR
Octanol-water partition coefficient (log L/kg) -0.6323 TR
Diffusion coefficient in air (cm^2/s) 0.15 TR
Diffusion coefficient in water (cm^2/s) 1.64e-005 TR
     
Miscellaneous Parameters Value Reference
Relative bioavailability factor (-) 1 T
Analytical Detection Limits:
Water (mg/L) - -
Soil (mg/kg) - -
First-order decay half lives (days):
Saturated zone 7  
Unsaturated zone 7 H
Soil-to-plant biotransfer factor (0):
Above ground veg. -  
Below ground veg. - -
     
Toxicity Data Value Reference
EPA weight of evidence NA  
Carcinogen FALSE  
Oral slope factor (1/[mg/kg/day]) - -
Inhalation unit risk factor (1/[ug/m^3]) - -
Oral reference dose (mg/kg/day) 0.5 TR
Inhalation reference conc. (mg/m^3) 0.262 TR
     
Dermal Exposure Value Reference
Dermal adsorption fraction (-) 0 TR
Gastrointestinal adsorption fraction (-) 0.8 TR
Dermal permeability coefficient (cm/hr) 0.00035 D
Lag time for dermal exposure (hr) 0.14 D
Critical dermal exposure time (hr) 0.33  
Relative contribution of perm. coeff. (-) 1.7e-005  
     
Regulatory Standards Value Reference
Primary MCL - -
Secondary MCL - -
Drinking Water MCLs (mg/L):
Occupational Air PEL/TWA (mg/m^3) 260 OS
Surface water quality criteria (mg/L)
Aquatic life protection: Fresh water biota - -
Aquatic life protection: Marine biota - -
Human health: Drinking / freshwater fish - -
Human health: Fresh water fishing only - -
Human health: Salt water fishing only - -
     
LAST UPDATE: Sunday, 29 November -0001