ChemSpider 2D Image | Pentacene | C22H14

Pentacene

  • Molecular FormulaC22H14
  • Average mass278.347 Da
  • Monoisotopic mass278.109558 Da
  • ChemSpider ID8347

More details:

Featured data source
The Merck Index Online

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

135-48-8 [RN]
1912418 [Beilstein]
2,3,6,7-Dibenzoanthracene
205-193-7 [EINECS]
9FQU5HA0UY
Benzo(b)naphthacene
lin-Naphthoanthracene
MFCD00003710 [MDL number]
Pentacen [German] [ACD/IUPAC Name]
Pentacene [ACD/Index Name] [ACD/IUPAC Name] [Wiki]
More...

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

45797_RIEDEL [DBID]
76440_FLUKA [DBID]
CHEBI:33148 [DBID]
NCIOpen2_006282 [DBID]
NSC 90784 [DBID]
NSC90784 [DBID]
P1802_ALDRICH [DBID]
  • Experimental Physico-chemical Properties
  • Miscellaneous
  • Gas Chromatography

    • Retention Index (Kovats):

      2761 (estimated with error: 174) NIST Spectra mainlib_234338, replib_253142, replib_61938, replib_158205

    • Retention Index (Lee):

      486.81 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.3 mm; Column length: 12 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 50 C; End T: 250 C; CAS no: 135488; Active phase: SE-52; Carrier gas: He; Phase thickness: 0.34 um; Data type: Lee RI; Authors: Lee, M.L.; Vassilaros, D.L.; White, C.M.; Novotny, M., Retention Indices for Programmed-Temperature Capillary-Column Gas Chromatography of Polycyclic Aromatic Hydrocarbons, Anal. Chem., 51(6), 1979, 768-773., Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column length: 12 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 40 C; End T: 285 C; CAS no: 135488; Active phase: SE-52; Data type: Lee RI; Authors: Boenke, A.; Ballschmiter, K., Fused quinones as retention index marker in high resolution gas chromatography with electron-capture detection (HRGC/ECD) of oxidized aromatic compounds, Fresenius J. Anal. Chem., 327, 1987, 44-45., Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column type: Capillary; CAS no: 135488; Active phase: SE-52; Data type: Lee RI; Authors: Shlyakhov, A.F., Gas chromatography in organic geochemistry, Nedra, Moscow, 1984, 221., Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column type: Capillary; Heat rate: 2 K/min; Start T: 50 C; End T: 250 C; CAS no: 135488; Active phase: 5 % Phenyl methyl siloxane; Data type: Lee RI; Authors: Skrbic, B.; Onjia, A., Prediction of Lee Retention Indices of Polycyclic Aromatic Hydrocarbons by Artificial Neural Networks, J. Chromatorg. A, 1108(2), 2006, 279-284.) NIST Spectra nist ri
      483.8 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; CAS no: 135488; Active phase: DB-5MS; Data type: Lee RI; Authors: Aracil, I.; Font, R.; Conesa, J.A., Semivolatile and volatile compounds from the pyrolysis and combustion of polyvinyl chloride, J. Anal. Appl. Pyrolysis, 74, 2005, 465-478.) NIST Spectra nist ri

Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module

Density: 1.2±0.1 g/cm3
Boiling Point: 524.7±17.0 °C at 760 mmHg
Vapour Pressure: 0.0±0.7 mmHg at 25°C
Enthalpy of Vaporization: 76.9±0.8 kJ/mol
Flash Point: 264.5±15.1 °C
Index of Refraction: 1.812
Molar Refractivity: 97.6±0.3 cm3
#H bond acceptors: 0
#H bond donors: 0
#Freely Rotating Bonds: 0
#Rule of 5 Violations: 1
ACD/LogP: 7.14
ACD/LogD (pH 5.5): 6.86
ACD/BCF (pH 5.5): 96832.05
ACD/KOC (pH 5.5): 128994.55
ACD/LogD (pH 7.4): 6.86
ACD/BCF (pH 7.4): 96832.05
ACD/KOC (pH 7.4): 128994.55
Polar Surface Area: 0 Å2
Polarizability: 38.7±0.5 10-24cm3
Surface Tension: 57.7±3.0 dyne/cm
Molar Volume: 225.9±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) =  6.70
    Log Kow (Exper. database match) =  7.11
       Exper. Ref:  De Voogt,P et al. (1990)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  470.09  (Adapted Stein & Brown method)
    Melting Pt (deg C):  180.52  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  4.55E-010  (Modified Grain method)
    MP  (exp database):  257 deg C
    Subcooled liquid VP: 1.55E-007 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):  0.001077
       log Kow used: 7.11 (expkow database)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  0.00047 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   4.89E-007  atm-m3/mole
   Group Method:   1.23E-007  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  1.547E-007 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  7.11  (exp database)
  Log Kaw used:  -4.699  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  11.809
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :  -0.0423
   Biowin2 (Non-Linear Model)     :   0.0000
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   1.7847  (months      )
   Biowin4 (Primary Survey Model) :   2.7439  (weeks-months)
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :  -0.0009
   Biowin6 (MITI Non-Linear Model):   0.0213
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -0.4999
 Ready Biodegradability Prediction:   NO

 Hydrocarbon Biodegradation (BioHCwin v1.01):
     LOG BioHC Half-Life (days) :   2.7088
     BioHC Half-Life (days)     : 511.4459

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  2.07E-005 Pa (1.55E-007 mm Hg)
  Log Koa (Koawin est  ): 11.809
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.145 
       Octanol/air (Koa) model:  0.158 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.84 
       Mackay model           :  0.921 
       Octanol/air (Koa) model:  0.927 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  50.0000 E-12 cm3/molecule-sec
      Half-Life =     0.214 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     2.567 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 0.88 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  2.516E+006
      Log Koc:  6.401 

 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 = 4.659 (BCF = 4.564e+004)
       log Kow used: 7.11 (expkow database)

 Volatilization from Water:
    Henry LC:  1.23E-007 atm-m3/mole  (estimated by Group SAR Method)
    Half-Life from Model River:       7943  hours   (331 days)
    Half-Life from Model Lake : 8.679E+004  hours   (3616 days)

 Removal In Wastewater Treatment:
    Total removal:              93.89  percent
    Total biodegradation:        0.78  percent
    Total sludge adsorption:    93.11  percent
    Total to Air:                0.00  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       0.0394          5.13         1000       
   Water     1.48            1.44e+003    1000       
   Soil      33              2.88e+003    1000       
   Sediment  65.5            1.3e+004     0          
     Persistence Time: 4.84e+003 hr

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