Dibromomethane

Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module, version: 14.00

Predicted data is generated using the US Environmental Protection Agency�s EPISuite™

                        
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  1.52
    Log Kow (Exper. database match) =  1.70
       Exper. Ref:  Martiska,A & Bekarek,V (1990)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  107.75  (Adapted Stein & Brown method)
    Melting Pt (deg C):  -51.64  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  48.8  (Mean VP of Antoine & Grain methods)
    MP  (exp database):  -52.5 deg C
    BP  (exp database):  97 deg C
    VP  (exp database):  4.44E+01 mm Hg at 25 deg C

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  2084
       log Kow used: 1.70 (expkow database)
       no-melting pt equation used
     Water Sol (Exper. database match) =  1.19e+004 mg/L (30 deg C)
        Exper. Ref:  GROSS,PM & SAYLOR,JH (1931)

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  6526.5 mg/L
    Wat Sol (Exper. database match) =  11900.00
       Exper. Ref:  GROSS,PM & SAYLOR,JH (1931)

 ECOSAR Class Program (ECOSAR v0.99h):
    Class(es) found:
       Neutral Organics

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   9.78E-004  atm-m3/mole
   Group Method:   8.68E-004  atm-m3/mole
   Exper Database: 8.22E-04  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  5.356E-003 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  1.70  (exp database)
  Log Kaw used:  -1.474  (exp database)
      Log Koa (KOAWIN v1.10 estimate):  3.174
      Log Koa (experimental database):  3.070

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.5724
   Biowin2 (Non-Linear Model)     :   0.0002
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.8729  (weeks       )
   Biowin4 (Primary Survey Model) :   3.6677  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.4379
   Biowin6 (MITI Non-Linear Model):   0.0401
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  1.5802
 Ready Biodegradability Prediction:   NO

Hydrocarbon Biodegradation (BioHCwin v1.01):
    Structure incompatible with current estimation method!

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  5.92E+003 Pa (44.4 mm Hg)
  Log Koa (Exp database): 3.070
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  5.07E-010 
       Octanol/air (Koa) model:  2.88E-010 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  1.83E-008 
       Mackay model           :  4.05E-008 
       Octanol/air (Koa) model:  2.31E-008 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   0.0732 E-12 cm3/molecule-sec
      Half-Life =   146.069 Days (12-hr day; 1.5E6 OH/cm3)
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 2.94E-008 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  23.74
      Log Koc:  1.376 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
  Total Kb for pH > 8 at 25 deg C :  2.482E-008  L/mol-sec
  Kb Half-Life at pH 8: 8.849E+005  years  
  Kb Half-Life at pH 7: 8.849E+006  years  

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 0.609 (BCF = 4.064)
       log Kow used: 1.70 (expkow database)

 Volatilization from Water:
    Henry LC:  0.000822 atm-m3/mole  (Henry experimental database)
    Half-Life from Model River:      2.285  hours
    Half-Life from Model Lake :      135.5  hours   (5.645 days)

 Removal In Wastewater Treatment:
    Total removal:              27.32  percent
    Total biodegradation:        0.07  percent
    Total sludge adsorption:     1.54  percent
    Total to Air:               25.70  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       34.2            2.27e+003    1000       
   Water     36.2            360          1000       
   Soil      29.5            720          1000       
   Sediment  0.0973          3.24e+003    0          
     Persistence Time: 205 hr