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: 287-92-3
SMILES : C(CCC1)C1
CHEM   : Cyclopentane
MOL FOR: C5 H10 
MOL WT : 70.14
------------------------------ 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) =  2.68
    Log Kow (Exper. database match) =  3.00
       Exper. Ref:  HANSCH,C ET AL. (1995)
 
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
    Boiling Pt (deg C):  62.53  (Adapted Stein & Brown method)
    Melting Pt (deg C):  -94.53  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  314  (Mean VP of Antoine & Grain methods)
    VP (Pa, 25 deg C) :  4.19E+004  (Mean VP of Antoine & Grain methods)
    MP  (exp database):  -93.8 deg C
    BP  (exp database):  49.3 deg C
    VP  (exp database):  3.18E+02 mm Hg (4.24E+004 Pa) at 25 deg C
 
 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  107.7
       log Kow used: 3.00 (expkow database)
       no-melting pt equation used
     Water Sol (Exper. database match) =  156 mg/L (25 deg C)
        Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)
 
 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  87.034 mg/L
 
 ECOSAR Class Program (ECOSAR v1.00):
    Class(es) found:
       Neutral Organics
 
 Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
   Bond Method :   1.92E-001  atm-m3/mole  (1.95E+004 Pa-m3/mole)
   Group Method:   1.38E-001  atm-m3/mole  (1.39E+004 Pa-m3/mole)
   Exper Database: 1.52E-01  atm-m3/mole  (1.54E+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:  2.691E-001 atm-m3/mole  (2.726E+004 Pa-m3/mole)
      VP:   314 mm Hg (source: MPBPVP)
      WS:   108 mg/L (source: WSKOWWIN)
 
 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  3.00  (exp database)
  Log Kaw used:  0.793  (exp database)
      Log Koa (KOAWIN v1.10 estimate):  2.207
      Log Koa (experimental database):  None
 
 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7142
   Biowin2 (Non-Linear Model)     :   0.8821
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.0442  (weeks       )
   Biowin4 (Primary Survey Model) :   3.7465  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.6021
   Biowin6 (MITI Non-Linear Model):   0.8434
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.2360
 Ready Biodegradability Prediction:   YES
 
 Hydrocarbon Biodegradation (BioHCwin v1.01):
     LOG BioHC Half-Life (days) :   1.6546
     BioHC Half-Life (days)     :  45.1424
 
 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  4.24E+004 Pa (318 mm Hg)
  Log Koa (Koawin est  ): 2.207
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  7.08E-011 
       Octanol/air (Koa) model:  3.95E-011 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  2.56E-009 
       Mackay model           :  5.66E-009 
       Octanol/air (Koa) model:  3.16E-009 
 
 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   4.5218 E-12 cm3/molecule-sec
      Half-Life =     2.365 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    28.385 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi):
      4.11E-009 (Junge-Pankow, Mackay avg)
      3.16E-009 (Koa method)
    Note: the sorbed fraction may be resistant to atmospheric oxidation
 
 Soil Adsorption Coefficient (KOCWIN v2.00):
      Koc    :  79.99  L/kg (MCI method)
      Log Koc:  1.903       (MCI method)
      Koc    :  401.1  L/kg (Kow method)
      Log Koc:  2.603       (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 = 1.646 (BCF = 44.3 L/kg wet-wt)
   Log Biotransformation Half-life (HL) = -0.3136 days (HL = 0.4857 days)
   Log BCF Arnot-Gobas method (upper trophic) = 1.839 (BCF = 69.04)
   Log BAF Arnot-Gobas method (upper trophic) = 1.839 (BAF = 69.04)
       log Kow used: 3.00 (expkow database)
 
 Volatilization from Water:
    Henry LC:  0.152 atm-m3/mole  (Henry experimental database)
    Half-Life from Model River:     0.8578  hours   (51.47 min)
    Half-Life from Model Lake :      79.58  hours   (3.316 days)
 
 Removal In Wastewater Treatment (recommended maximum 95%):
    Total removal:              98.35  percent
    Total biodegradation:        0.03  percent
    Total sludge adsorption:     2.57  percent
    Total to Air:               95.76  percent
      (using 10000 hr Bio P,A,S)
 
 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       34.9            49.8         1000       
   Water     62.8            360          1000       
   Soil      1.9             720          1000       
   Sediment  0.319           3.24e+003    0          
     Persistence Time: 97.9 hr