Arsenic Type: M
CAS No. 7440382  
Physical Properties Value Reference
Molecular Weight (g/mol) 74.9216 TR
Solubility @ 20-25 degC (mg/L) 0 TR
Vapor pressure @ 20-25 degC (mmHG) 0 TR
Henry's Law constant @ 20 degC 0 TR
Sorption coefficient (log L/kg) Koc 1.3979400087 TR
Octanol-water partition coefficient (log L/kg) 0.679 TR
Diffusion coefficient in air (cm^2/s) 0 TR
Diffusion coefficient in water (cm^2/s) 0 TR
Miscellaneous Parameters Value Reference
Relative bioavailability factor (-) 0.78 T
Analytical Detection Limits:
Water (mg/L) 0.01 S
Soil (mg/kg) 0.053 S
First-order decay half lives (days):
Saturated zone -  
Unsaturated zone - -
Soil-to-plant biotransfer factor (0):
Above ground veg. 0.01  
Below ground veg. 0.008 TR
Toxicity Data Value Reference
EPA weight of evidence A  
Carcinogen TRUE  
Oral slope factor (1/[mg/kg/day]) 1.5 TR
Inhalation unit risk factor (1/[ug/m^3]) 0.0043 TR
Oral reference dose (mg/kg/day) 0.0003 TR
Inhalation reference conc. (mg/m^3) - -
Dermal Exposure Value Reference
Dermal adsorption fraction (-) 0.03 TR
Gastrointestinal adsorption fraction (-) 0.95 TR
Dermal permeability coefficient (cm/hr) 0.001 D
Lag time for dermal exposure (hr) - D
Critical dermal exposure time (hr) -  
Relative contribution of perm. coeff. (-) -  
Regulatory Standards Value Reference
Primary MCL 0.01 MC
Secondary MCL - -
Drinking Water MCLs (mg/L):
Occupational Air PEL/TWA (mg/m^3) 0.01 OS
Surface water quality criteria (mg/L)
Aquatic life protection: Fresh water biota 0.19 T1
Aquatic life protection: Marine biota 0.078 T1
Human health: Drinking / freshwater fish 0.05 T3
Human health: Fresh water fishing only 0.00014 E
Human health: Salt water fishing only 0.00014 E
LAST UPDATE: Friday, 05 August 2011