This page contains the EPI System Summary only.
For complete control of this information -
Download the free EPI SuiteTM v4.0 program : here
To Datasheet

CAS Number: 13708-12-8
SMILES : n(c(c(nc1)ccc2)c2C)c1
CHEM   : Quinoxaline, 5-methyl-
MOL FOR: C9 H8 N2 
MOL WT : 144.18
------------------------------ EPI SUMMARY (v4.00) --------------------------
 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 v1.67 estimate) =  1.66
    Log Kow (Exper. database match) =  2.04
       Exper. Ref:  HANSCH,C ET AL. (1995)
 
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
    Boiling Pt (deg C):  265.62  (Adapted Stein & Brown method)
    Melting Pt (deg C):  64.26  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.0051  (Modified Grain method)
    VP (Pa, 25 deg C) :  0.68  (Modified Grain method)
    BP  (exp database):  120 @ 15 mm Hg deg C
    Subcooled liquid VP: 0.0119 mm Hg (25 deg C, Mod-Grain method)
                       : 1.58 Pa (25 deg C, Mod-Grain method)
 
 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  1456
       log Kow used: 2.04 (expkow database)
       no-melting pt equation used
 
 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  5166.5 mg/L
 
 ECOSAR Class Program (ECOSAR v1.00):
    Class(es) found:
       Neutral Organics
 
 Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
   Bond Method :   3.14E-007  atm-m3/mole  (3.19E-002 Pa-m3/mole)
   Group Method:   6.89E-009  atm-m3/mole  (6.99E-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:  6.645E-007 atm-m3/mole  (6.733E-002 Pa-m3/mole)
      VP:   0.0051 mm Hg (source: MPBPVP)
      WS:   1.46E+003 mg/L (source: WSKOWWIN)
 
 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  2.04  (exp database)
  Log Kaw used:  -4.892  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  6.932
      Log Koa (experimental database):  None
 
 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7336
   Biowin2 (Non-Linear Model)     :   0.8232
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.8057  (weeks       )
   Biowin4 (Primary Survey Model) :   3.5712  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.3658
   Biowin6 (MITI Non-Linear Model):   0.3255
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -0.0128
 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):  1.59 Pa (0.0119 mm Hg)
  Log Koa (Koawin est  ): 6.932
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  1.89E-006 
       Octanol/air (Koa) model:  2.1E-006 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  6.83E-005 
       Mackay model           :  0.000151 
       Octanol/air (Koa) model:  0.000168 
 
 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   5.3572 E-12 cm3/molecule-sec
      Half-Life =     1.997 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    23.959 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi):
      0.00011 (Junge-Pankow, Mackay avg)
      0.000168 (Koa method)
    Note: the sorbed fraction may be resistant to atmospheric oxidation
 
 Soil Adsorption Coefficient (KOCWIN v2.00):
      Koc    :  640.4  L/kg (MCI method)
      Log Koc:  2.806       (MCI method)
      Koc    :  283.1  L/kg (Kow method)
      Log Koc:  2.452       (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 v3.00):
   Log BCF from regression-based method = 1.013 (BCF = 10.3 L/kg wet-wt)
   Log Biotransformation Half-life (HL) = -1.0127 days (HL = 0.09711 days)
   Log BCF Arnot-Gobas method (upper trophic) = 0.930 (BCF = 8.509)
   Log BAF Arnot-Gobas method (upper trophic) = 0.930 (BAF = 8.509)
       log Kow used: 2.04 (expkow database)
 
 Volatilization from Water:
    Henry LC:  3.14E-007 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:       2240  hours   (93.34 days)
    Half-Life from Model Lake : 2.454E+004  hours   (1022 days)
 
 Removal In Wastewater Treatment:
    Total removal:               2.30  percent
    Total biodegradation:        0.10  percent
    Total sludge adsorption:     2.19  percent
    Total to Air:                0.02  percent
      (using 10000 hr Bio P,A,S)
 
 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       1.82            47.9         1000       
   Water     21.8            360          1000       
   Soil      75.8            720          1000       
   Sediment  0.527           3.24e+003    0          
     Persistence Time: 551 hr