ChemSpider 2D Image | 4,4'-Dimethoxy-2,2'-bithiophene | C10H10O2S2

4,4'-Dimethoxy-2,2'-bithiophene

  • Molecular FormulaC10H10O2S2
  • Average mass226.315 Da
  • Monoisotopic mass226.012222 Da
  • ChemSpider ID557553

More details:

Validated by Experts, Validated by Users, Non-Validated, Removed by Users

2,2'-Bithiophene, 4,4'-dimethoxy- [ACD/Index Name]
4,4'-Dimethoxy-2,2'-bithiophen [German] [ACD/IUPAC Name]
4,4'-Dimethoxy-2,2'-bithiophene [ACD/IUPAC Name]
4,4'-Diméthoxy-2,2'-bithiophène [French] [ACD/IUPAC Name]

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

Density: 1.2±0.1 g/cm3
Boiling Point: 318.8±37.0 °C at 760 mmHg
Vapour Pressure: 0.0±0.7 mmHg at 25°C
Enthalpy of Vaporization: 53.8±3.0 kJ/mol
Flash Point: 146.6±26.5 °C
Index of Refraction: 1.586
Molar Refractivity: 61.0±0.3 cm3
#H bond acceptors: 2
#H bond donors: 0
#Freely Rotating Bonds: 3
#Rule of 5 Violations: 0
ACD/LogP: 3.12
ACD/LogD (pH 5.5): 3.04
ACD/BCF (pH 5.5): 120.76
ACD/KOC (pH 5.5): 1076.12
ACD/LogD (pH 7.4): 3.04
ACD/BCF (pH 7.4): 120.76
ACD/KOC (pH 7.4): 1076.12
Polar Surface Area: 75 Å2
Polarizability: 24.2±0.5 10-24cm3
Surface Tension: 41.2±3.0 dyne/cm
Molar Volume: 181.7±3.0 cm3

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

                        
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  3.56

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  343.41  (Adapted Stein & Brown method)
    Melting Pt (deg C):  118.16  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  2.26E-005  (Modified Grain method)
    Subcooled liquid VP: 0.000189 mm Hg (25 deg C, Mod-Grain method)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  29.08
       log Kow used: 3.56 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  20.205 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   4.27E-007  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  2.314E-007 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  3.56  (KowWin est)
  Log Kaw used:  -4.758  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  8.318
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.9036
   Biowin2 (Non-Linear Model)     :   0.9865
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.5828  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.6755  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.4630
   Biowin6 (MITI Non-Linear Model):   0.3009
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.6513
 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):  0.0252 Pa (0.000189 mm Hg)
  Log Koa (Koawin est  ): 8.318
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.000119 
       Octanol/air (Koa) model:  5.11E-005 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.00428 
       Mackay model           :  0.00943 
       Octanol/air (Koa) model:  0.00407 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant = 201.6592 E-12 cm3/molecule-sec
      Half-Life =     0.053 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     0.636 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 0.00686 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  931
      Log Koc:  2.969 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
    Rate constants can NOT be estimated for this structure!

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 2.041 (BCF = 109.8)
       log Kow used: 3.56 (estimated)

 Volatilization from Water:
    Henry LC:  4.27E-007 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:       2064  hours   (86.01 days)
    Half-Life from Model Lake : 2.265E+004  hours   (943.5 days)

 Removal In Wastewater Treatment:
    Total removal:              14.49  percent
    Total biodegradation:        0.20  percent
    Total sludge adsorption:    14.27  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       0.0562          1.27         1000       
   Water     17.9            900          1000       
   Soil      80.5            1.8e+003     1000       
   Sediment  1.5             8.1e+003     0          
     Persistence Time: 1.06e+003 hr

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