Mercury (Tier 1 pH = 6.8) Type: M
CAS No. 7439976  
Physical Properties Value Reference
Molecular Weight (g/mol) 200.59 TR
Solubility @ 20-25 degC (mg/L) 0.03 TR
Vapor pressure @ 20-25 degC (mmHG) 0.0013 TR
Henry's Law constant @ 20 degC 0.473898 TR
Sorption coefficient (log L/kg) Koc 1.7160033 TR
Octanol-water partition coefficient (log L/kg) -0.471 TR
Diffusion coefficient in air (cm^2/s) 0.0307 TR
Diffusion coefficient in water (cm^2/s) 6.3e-006 TR
     
Miscellaneous Parameters Value Reference
Relative bioavailability factor (-) 1 T
Analytical Detection Limits:
Water (mg/L) 0.0002 MC
Soil (mg/kg) - -
First-order decay half lives (days):
Saturated zone -  
Unsaturated zone - -
Soil-to-plant biotransfer factor (0):
Above ground veg. 0.0055  
Below ground veg. 0.014 TR
     
Toxicity Data Value Reference
EPA weight of evidence D  
Carcinogen FALSE  
Oral slope factor (1/[mg/kg/day]) - -
Inhalation unit risk factor (1/[ug/m^3]) - -
Oral reference dose (mg/kg/day) 0.0003 TR
Inhalation reference conc. (mg/m^3) 0.0003 TR
     
Dermal Exposure Value Reference
Dermal adsorption fraction (-) 0.01 TR
Gastrointestinal adsorption fraction (-) 0.07 TR
Dermal permeability coefficient (cm/hr) - -
Lag time for dermal exposure (hr) - -
Critical dermal exposure time (hr) -  
Relative contribution of perm. coeff. (-) -  
     
Regulatory Standards Value Reference
Primary MCL 0.002 MC
Secondary MCL - -
Drinking Water MCLs (mg/L):
Occupational Air PEL/TWA (mg/m^3) 0.025 AC
Surface water quality criteria (mg/L)
Aquatic life protection: Fresh water biota 0.0013 T1
Aquatic life protection: Marine biota 0.0011 T1
Human health: Drinking / freshwater fish 1.22e-005 T3
Human health: Fresh water fishing only 1.22e-005 T3
Human health: Salt water fishing only 2.5e-005 T3
     
LAST UPDATE: Sunday, 29 November -0001