CAS Number: 74-84-0
SMILES : CC
CHEM   : Ethane
MOL FOR: C2 H6 
MOL WT : 30.07
------------------------------ EPI SUMMARY (v4.10) --------------------------
 Physical Property Inputs:
    Log Kow (octanol-water):   ------
    Boiling Point (deg C)  :   ------
    Melting Point (deg C)  :   ------
    Vapor Pressure (mm Hg) :   ------
    Water Solubility (mg/L):   ------
    Henry LC (atm-m3/mole) :   ------
 
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.68 estimate) =  1.32
    Log Kow (Exper. database match) =  1.81
       Exper. Ref:  HANSCH,C ET AL. (1995)
 
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
    Boiling Pt (deg C):  -35.99  (Adapted Stein & Brown method)
    Melting Pt (deg C):  -147.77  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  2.02E+004  (Mean VP of Antoine & Grain methods)
    VP (Pa, 25 deg C) :  2.7E+006  (Mean VP of Antoine & Grain methods)
    MP  (exp database):  -182.8 deg C
    BP  (exp database):  -88.6 deg C
    VP  (exp database):  3.15E+04 mm Hg (4.20E+006 Pa) at 25 deg C
 
 Water Solubility Estimate from Log Kow (WSKOW v1.42):
    Water Solubility at 25 deg C (mg/L):  938.6
       log Kow used: 1.81 (expkow database)
       no-melting pt equation used
     Water Sol (Exper. database match) =  60.2 mg/L (25 deg C)
        Exper. Ref:  MCAULIFFE,C (1966)
 
 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  383.29 mg/L
 
 ECOSAR Class Program (ECOSAR v1.00):
    Class(es) found:
       Neutral Organics
 
 Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
   Bond Method :   5.50E-001  atm-m3/mole  (5.57E+004 Pa-m3/mole)
   Group Method:   4.25E-001  atm-m3/mole  (4.31E+004 Pa-m3/mole)
   Exper Database: 5.00E-01  atm-m3/mole  (5.07E+004 Pa-m3/mole)
 For Henry LC Comparison Purposes:
   User-Entered Henry LC:  not entered
   Henrys LC [via VP/WSol estimate using User-Entered or Estimated values]:
      HLC:  3.204E-002 atm-m3/mole  (3.246E+003 Pa-m3/mole)
      VP:   2.02E+004 mm Hg (source: MPBPVP)
      WS:   939 mg/L (source: WSKOWWIN)
 
 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  1.81  (exp database)
  Log Kaw used:  1.311  (exp database)
      Log Koa (KOAWIN v1.10 estimate):  0.499
      Log Koa (experimental database):  0.420
 
 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7332
   Biowin2 (Non-Linear Model)     :   0.9297
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.1327  (weeks       )
   Biowin4 (Primary Survey Model) :   3.8044  (days        )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.6235
   Biowin6 (MITI Non-Linear Model):   0.8451
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.6769
 Ready Biodegradability Prediction:   YES
 
 Hydrocarbon Biodegradation (BioHCwin v1.01):
     LOG BioHC Half-Life (days) :   0.4064
     BioHC Half-Life (days)     :   2.5494
 
 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  4.2E+006 Pa (3.15E+004 mm Hg)
  Log Koa (Exp database): 0.420
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  7.14E-013 
       Octanol/air (Koa) model:  6.46E-013 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  2.58E-011 
       Mackay model           :  5.71E-011 
       Octanol/air (Koa) model:  5.17E-011 
 
 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   0.2720 E-12 cm3/molecule-sec
      Half-Life =    39.323 Days (12-hr day; 1.5E6 OH/cm3)
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi):
      4.15E-011 (Junge-Pankow, Mackay avg)
      5.17E-011 (Koa method)
    Note: the sorbed fraction may be resistant to atmospheric oxidation
 
 Soil Adsorption Coefficient (KOCWIN v2.00):
      Koc    :  13.22  L/kg (MCI method)
      Log Koc:  1.121       (MCI method)
      Koc    :  37.2  L/kg (Kow method)
      Log Koc:  1.570       (Kow method)
 
 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
    Rate constants can NOT be estimated for this structure!
 
 Bioaccumulation Estimates (BCFBAF v3.01):
   Log BCF from regression-based method = 0.861 (BCF = 7.265 L/kg wet-wt)
   Log Biotransformation Half-life (HL) = -0.5677 days (HL = 0.2706 days)
   Log BCF Arnot-Gobas method (upper trophic) = 0.838 (BCF = 6.887)
   Log BAF Arnot-Gobas method (upper trophic) = 0.838 (BAF = 6.887)
       log Kow used: 1.81 (expkow database)
 
 Volatilization from Water:
    Henry LC:  0.5 atm-m3/mole  (Henry experimental database)
    Half-Life from Model River:     0.5602  hours   (33.61 min)
    Half-Life from Model Lake :      52.09  hours   (2.17 days)
 
 Removal In Wastewater Treatment (recommended maximum 95%):
    Total removal:              99.49  percent
    Total biodegradation:        0.02  percent
    Total sludge adsorption:     0.41  percent
    Total to Air:               99.06  percent
      (using 10000 hr Bio P,A,S)
 
 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       55.1            958          1000       
   Water     44.3            360          1000       
   Soil      0.556           720          1000       
   Sediment  0.106           3.24e+003    0          
     Persistence Time: 139 hr