ChemSpider 2D Image | 2-Ethyl-5-methylthiophene | C7H10S

2-Ethyl-5-methylthiophene

  • Molecular FormulaC7H10S
  • Average mass126.219 Da
  • Monoisotopic mass126.050323 Da
  • ChemSpider ID454439

More details:






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

2-Ethyl-5-methylthiophen [German] [ACD/IUPAC Name]
2-Ethyl-5-methylthiophene [ACD/IUPAC Name]
2-Éthyl-5-méthylthiophène [French] [ACD/IUPAC Name]
Thiophene, 2-ethyl-5-methyl- [ACD/Index Name]
[40323-88-4]
2-Ethyl-5-methyl-thiophene
2-Ethyl-5-Methylthiophene (en)
2-ethyl-5-methylthiophene, 99%
2-methyl-5-ethylthiophene
2-Methyl-5-ethyl-thiophene
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Validated by Experts, Validated by Users, Non-Validated, Removed by Users

ZINC02510291 [DBID]
  • Experimental Physico-chemical Properties
  • Miscellaneous
    • Safety:

      10 Alfa Aesar B22640
      3 Alfa Aesar B22640
      DANGER: FLAMMABLE, irritates skin and eyes Alfa Aesar B22640
      H226 Alfa Aesar B22640
      IRRITANT Matrix Scientific 096211
      P210-P280-P240-P303+P361+P353-P403+P235-P501a Alfa Aesar B22640
      Warning Alfa Aesar B22640
  • Gas Chromatography
    • Retention Index (Kovats):

      983 (estimated with error: 46) NIST Spectra mainlib_249850
    • Retention Index (Normal Alkane):

      957 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column type: Capillary; CAS no: 40323884; Active phase: SE-30; Data type: Normal alkane RI; Authors: Vinogradov, B.A., Production, composition, properties and application of essential oils, 2004.) NIST Spectra nist ri
      952 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.20 mm; Column length: 50 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 35 C; End T: 170 C; CAS no: 40323884; Active phase: PONA; Carrier gas: N2; Phase thickness: 0.50 um; Data type: Normal alkane RI; Authors: Yang, Y.; Wang, Z.; Zong, B.; Yang, H., Determination of sulfur compounds in fluid catalytic cracking gasoline by gas chromatography with a sulfur chemiluminiscence detector, Chin. J. Chromatogr., 22(3), 2004, 216-219.) NIST Spectra nist ri
      951 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.20 mm; Column length: 50 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 30 C; End T: 170 C; CAS no: 40323884; Active phase: PONA; Carrier gas: Helium; Phase thickness: 0.50 um; Data type: Normal alkane RI; Authors: Yang, Y.T.; Yang, H.Y.; Zong, B.N.; Lu, W.Z., determination and distribution of sulfur compounds in gasoline by gas chromatography-atomic emission detector, Chinise J. Anal. Chem. (Fenxi Huaxue), 31(10), 2003, 1153-1158., Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column type: Capillary; CAS no: 40323884; Active phase: Methyl Silicone; Data type: Normal alkane RI; Authors: Miki, Y.; Sugimoto, Y.; Yamadaya, S., Synthesis and GC-MS analysis of alkylthiophenes, Nippon Kagaku Kaishi, 1, 1993, 79-85.) NIST Spectra nist ri
      937 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column type: Capillary; CAS no: 40323884; Active phase: Methyl Silicone; Data type: Normal alkane RI; Authors: Miki, Y.; Sugimoto, Y.; Yamadaya, S., Synthesis and GC-MS analysis of alkylthiophenes, Nippon Kagaku Kaishi, 1, 1993, 79-85.) NIST Spectra nist ri
      944 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 25 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 0 C; End T: 300 C; Start time: 5 min; CAS no: 40323884; Active phase: CP-Sil 5; Carrier gas: Helium; Phase thickness: 0.45 um; Data type: Normal alkane RI; Authors: Damste, J.S.S.; van Dalen, A.C.K.; de Leeuw, J.W.; Schenck, P.A., Identification of homologous series of alkylated thiophenes, thiolanes, thianes and benzothiophenes present in pyrolisates of sulfur-rich kerogenes, J. Chromatogr., 435, 1988, 435-452., Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 25 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 50 C; End T: 300 C; CAS no: 40323884; Active phase: CP Sil 5 CB; Carrier gas: He; Phase thickness: 0.45 um; Data type: Normal alkane RI; Authors: Damste, J.S.S.; Kock-van Dalen, A.C.; de Leeuw, J.W.; Schenk, P.A., Identification of homologous series of alkylated thiophenes, thiolanes, thianes and benzothiophenes present in pyrolysates of sulphur-rich kerogens, J. Chromatogr., 435, 1988, 435-452.) NIST Spectra nist ri
      945 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 25 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 0 C; End T: 300 C; Start time: 5 min; CAS no: 40323884; Active phase: CP-Sil 5; Carrier gas: Helium; Phase thickness: 0.45 um; Data type: Normal alkane RI; Authors: Damste, J.S.S.; van Dalen, A.C.K.; de Leeuw, J.W.; Schenck, P.A., Identification of homologous series of alkylated thiophenes, thiolanes, thianes and benzothiophenes present in pyrolisates of sulfur-rich kerogenes, J. Chromatogr., 435, 1988, 435-452., Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 25 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 50 C; End T: 300 C; CAS no: 40323884; Active phase: CP Sil 5 CB; Carrier gas: He; Phase thickness: 0.45 um; Data type: Normal alkane RI; Authors: Damste, J.S.S.; Kock-van Dalen, A.C.; de Leeuw, J.W.; Schenk, P.A., Identification of homologous series of alkylated thiophenes, thiolanes, thianes and benzothiophenes present in pyrolysates of sulphur-rich kerogens, J. Chromatogr., 435, 1988, 435-452.) NIST Spectra nist ri
      963 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 86.3 m; Column type: Capillary; CAS no: 40323884; Active phase: RTX-5; Carrier gas: He; Phase thickness: 1 um; Data type: Normal alkane RI; Authors: Chen, Y.; Ho, C.-T., Effects of carosine on volatile generation from Maillard reaction of ribose and cysteine, J. Agric. Food Chem., 50, 2002, 2372-2376.) NIST Spectra nist ri
    • Retention Index (Linear):

      957 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 50 C; End T: 200 C; CAS no: 40323884; Active phase: OV-101; Carrier gas: He; Phase thickness: 0.5 um; Data type: Linear RI; Authors: Misharina, T.A.; Golovnya, R.V.; Beletsky, I.V., Sorption properties of heterocyclic compounds differing by heteroatom in capillary gas chromatography, Russ. Chem. Bull. (Engl. Transl.), 42(7), 1993, 1167-1170, In original 1224-1227.) NIST Spectra nist ri
      967 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 40 C; End T: 280 C; Start time: 2 min; CAS no: 40323884; Active phase: CP Sil 8 CB; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Elmore, J.S.; Campo, M.M.; Enser, M.; Mottram, D.S., Effect of lipid composition on meat-like model systems containing cysteine, ribose, and polyunsaturated fatty acids, J. Agric. Food Chem., 50, 2002, 1126-1132.) NIST Spectra nist ri
      959 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 60 C; End T: 250 C; CAS no: 40323884; Active phase: BP-5; Data type: Linear RI; Authors: Whitfield, F.B.; Mottram, D.S., Heterocyclic volatiles formed by heating cysteine or hydrogen sulfide with 4-hydroxy-5-methyl-3(2H)-furanone at pH 6.5, J. Agric. Food Chem., 49, 2001, 816-822.) NIST Spectra nist ri

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

Density: 1.0±0.1 g/cm3
Boiling Point: 160.0±0.0 °C at 760 mmHg
Vapour Pressure: 3.2±0.2 mmHg at 25°C
Enthalpy of Vaporization: 38.0±3.0 kJ/mol
Flash Point: 31.4±4.9 °C
Index of Refraction: 1.522
Molar Refractivity: 39.0±0.3 cm3
#H bond acceptors: 0
#H bond donors: 0
#Freely Rotating Bonds: 1
#Rule of 5 Violations: 0
ACD/LogP: 3.35
ACD/LogD (pH 5.5): 2.96
ACD/BCF (pH 5.5): 104.96
ACD/KOC (pH 5.5): 973.32
ACD/LogD (pH 7.4): 2.96
ACD/BCF (pH 7.4): 104.96
ACD/KOC (pH 7.4): 973.32
Polar Surface Area: 28 Å2
Polarizability: 15.5±0.5 10-24cm3
Surface Tension: 32.1±3.0 dyne/cm
Molar Volume: 128.0±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) =  3.40

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  180.33  (Adapted Stein & Brown method)
    Melting Pt (deg C):  3.14  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.95  (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  119
       log Kow used: 3.40 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  139.59 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   4.73E-003  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  1.326E-003 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  3.40  (KowWin est)
  Log Kaw used:  -0.714  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  4.114
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7968
   Biowin2 (Non-Linear Model)     :   0.9146
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.7705  (weeks       )
   Biowin4 (Primary Survey Model) :   3.5286  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.3393
   Biowin6 (MITI Non-Linear Model):   0.3372
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.0721
 Ready Biodegradability Prediction:   NO

 Hydrocarbon Biodegradation (BioHCwin v1.01):
     LOG BioHC Half-Life (days) :   1.1751
     BioHC Half-Life (days)     :  14.9666

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  115 Pa (0.863 mm Hg)
  Log Koa (Koawin est  ): 4.114
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  2.61E-008 
       Octanol/air (Koa) model:  3.19E-009 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  9.42E-007 
       Mackay model           :  2.09E-006 
       Octanol/air (Koa) model:  2.55E-007 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  31.5478 E-12 cm3/molecule-sec
      Half-Life =     0.339 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     4.068 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 1.51E-006 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  454.7
      Log Koc:  2.658 

 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 = 1.917 (BCF = 82.63)
       log Kow used: 3.40 (estimated)

 Volatilization from Water:
    Henry LC:  0.00473 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      1.285  hours
    Half-Life from Model Lake :      108.2  hours   (4.509 days)

 Removal In Wastewater Treatment:
    Total removal:              67.41  percent
    Total biodegradation:        0.08  percent
    Total sludge adsorption:     7.50  percent
    Total to Air:               59.83  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       2.52            8.14         1000       
   Water     24              360          1000       
   Soil      72.6            720          1000       
   Sediment  0.87            3.24e+003    0          
     Persistence Time: 263 hr




                    

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