UNII:212JQJ15PS C8H12 structure

C8H12 structure
Molecular Formula C8H12
Average mass 108.181 Da
Density 0.9±0.1 g/cm3
Boiling Point 128.9±20.0 °C at 760 mmHg
Flash Point 20.0±0.0 °C
Molar Refractivity 38.1±0.3 cm3
Polarizability 15.1±0.5 10-24cm3
Surface Tension 31.8±3.0 dyne/cm
Molar Volume 120.6±3.0 cm3
  • Experimental Physico-chemical Properties
  • Miscellaneous
    • Appearance:

      colourless liquid Oxford University Chemical Safety Data (No longer updated) More details
    • Stability:

      Stable. Flammable (note low flash point). Incompatiblewith strong oxidizing agents, peroxide catalysts. Air-sensitive. Oxford University Chemical Safety Data (No longer updated) More details
    • Toxicity:

      ORL-RAT LD50 2563 mg kg-1, SKN-RBT LD50 16640 mg kg-1 Oxford University Chemical Safety Data (No longer updated) More details
    • Safety:

      IRRITANT Matrix Scientific 099026
      Safety glasses, gloves, adequate ventilation. Oxford University Chemical Safety Data (No longer updated) More details
  • Gas Chromatography
    • Retention Index (Kovats):

      852 (estimated with error: 39) NIST Spectra mainlib_227540, replib_1402, replib_118901
      833 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column diameter: 0.22 mm; Column length: 12 m; Column type: Capillary; Start T: 80 C; CAS no: 100403; Active phase: BP-1; Carrier gas: N2; Data type: Kovats RI; Authors: Bermejo, J.; Blanco, C.G.; Diez, M.A.; Guillen, M.D., Kovats retention indices of selected mono and polycyclic olefins, J. Hi. Res. Chromatogr. & Chromatogr. Comm., 10, 1987, 461-463., Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column diameter: 0.23 mm; Column length: 25 m; Column type: Capillary; Start T: 80 C; CAS no: 100403; Active phase: OV-101; Carrier gas: N2; Data type: Kovats RI; Authors: Bermejo, J.; Blanco, C.G.; Diez, M.A.; Guillen, M.D., Kovats retention indices of selected mono and polycyclic olefins, J. Hi. Res. Chromatogr. & Chromatogr. Comm., 10, 1987, 461-463., Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column diameter: 0.23 mm; Column length: 25 m; Column type: Capillary; Start T: 80 C; CAS no: 100403; Active phase: OV-101; Carrier gas: N2; Data type: Kovats RI; Authors: Diez, M.A.; Guillen, M.D.; Blanco, C.G.; Bermejo, J., Chromatographic study of methylcyclopentadiene dimers and iso-dimers and determination of their boiling points, J. Chromatogr., 508, 1990, 363-374., Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column diameter: 0.5 mm; Column length: 100 m; Column type: Capillary; Start T: 80 C; CAS no: 100403; Active phase: SE-30; Data type: Kovats RI; Authors: Bredael, P., Retention indices of hydrocarbons on SE-30, J. Hi. Res. Chromatogr. & Chromatogr. Comm., 5, 1982, 325-328.) NIST Spectra nist ri
      838 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column diameter: 0.23 mm; Column length: 25 m; Column type: Capillary; Start T: 100 C; CAS no: 100403; Active phase: OV-101; Carrier gas: N2; Data type: Kovats RI; Authors: Bermejo, J.; Blanco, C.G.; Diez, M.A.; Guillen, M.D., Kovats retention indices of selected mono and polycyclic olefins, J. Hi. Res. Chromatogr. & Chromatogr. Comm., 10, 1987, 461-463., Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column diameter: 0.23 mm; Column length: 25 m; Column type: Capillary; Start T: 100 C; CAS no: 100403; Active phase: OV-101; Carrier gas: N2; Data type: Kovats RI; Authors: Diez, M.A.; Guillen, M.D.; Blanco, C.G.; Bermejo, J., Chromatographic study of methylcyclopentadiene dimers and iso-dimers and determination of their boiling points, J. Chromatogr., 508, 1990, 363-374.) NIST Spectra nist ri
      839 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column diameter: 0.22 mm; Column length: 12 m; Column type: Capillary; Start T: 100 C; CAS no: 100403; Active phase: BP-1; Carrier gas: N2; Data type: Kovats RI; Authors: Bermejo, J.; Blanco, C.G.; Diez, M.A.; Guillen, M.D., Kovats retention indices of selected mono and polycyclic olefins, J. Hi. Res. Chromatogr. & Chromatogr. Comm., 10, 1987, 461-463.) NIST Spectra nist ri
      840 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column length: 2 m; Column type: Packed; Start T: 100 C; CAS no: 100403; Active phase: SE-30; Substrate: Gaschrom Q; Data type: Kovats RI; Authors: Winskowski, J., Gaschromatographische Identifizierung von Stoffen anhand von Indexziffem und unterschiedlichen Detektoren, Chromatographia, 17(3), 1983, 160-165.) NIST Spectra nist ri
      848 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column diameter: 0.5 mm; Column length: 100 m; Column type: Capillary; Start T: 130 C; CAS no: 100403; Active phase: SE-30; Data type: Kovats RI; Authors: Bredael, P., Retention indices of hydrocarbons on SE-30, J. Hi. Res. Chromatogr. & Chromatogr. Comm., 5, 1982, 325-328.) NIST Spectra nist ri
      825.1 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column diameter: 0.5 mm; Column length: 45 m; Column type: Capillary; Start T: 80 C; CAS no: 100403; Active phase: Squalane; Carrier gas: N2; Data type: Kovats RI; Authors: Diez, M.A.; Guillen, M.D.; Blanco, C.G.; Bermejo, J., Chromatographic study of methylcyclopentadiene dimers and iso-dimers and determination of their boiling points, J. Chromatogr., 508, 1990, 363-374.) NIST Spectra nist ri
      829.5 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column diameter: 0.5 mm; Column length: 45 m; Column type: Capillary; Start T: 100 C; CAS no: 100403; Active phase: Squalane; Carrier gas: N2; Data type: Kovats RI; Authors: Diez, M.A.; Guillen, M.D.; Blanco, C.G.; Bermejo, J., Chromatographic study of methylcyclopentadiene dimers and iso-dimers and determination of their boiling points, J. Chromatogr., 508, 1990, 363-374.) NIST Spectra nist ri
      843.6 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column diameter: 0.22 mm; Column length: 25 m; Column type: Capillary; Start T: 80 C; CAS no: 100403; Active phase: SE-54; Carrier gas: N2; Data type: Kovats RI; Authors: Diez, M.A.; Guillen, M.D.; Blanco, C.G.; Bermejo, J., Chromatographic study of methylcyclopentadiene dimers and iso-dimers and determination of their boiling points, J. Chromatogr., 508, 1990, 363-374.) NIST Spectra nist ri
      850.3 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column diameter: 0.22 mm; Column length: 25 m; Column type: Capillary; Start T: 100 C; CAS no: 100403; Active phase: SE-54; Carrier gas: N2; Data type: Kovats RI; Authors: Diez, M.A.; Guillen, M.D.; Blanco, C.G.; Bermejo, J., Chromatographic study of methylcyclopentadiene dimers and iso-dimers and determination of their boiling points, J. Chromatogr., 508, 1990, 363-374.) NIST Spectra nist ri
      809 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 50 ft; Column type: Packed; Start T: 27 C; CAS no: 100403; Active phase: Squalane; Carrier gas: He; Substrate: Chromosorb P; Data type: Kovats RI; Authors: Hively, R.A.; Hinton, R.E., Variation of the retention index with temperature on squalane substrates, J. Gas Chromatogr., 6, 1968, 203-217.) NIST Spectra nist ri
      818 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 50 ft; Column type: Packed; Start T: 49 C; CAS no: 100403; Active phase: Squalane; Carrier gas: He; Substrate: Chromosorb P; Data type: Kovats RI; Authors: Hively, R.A.; Hinton, R.E., Variation of the retention index with temperature on squalane substrates, J. Gas Chromatogr., 6, 1968, 203-217.) NIST Spectra nist ri
      824 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 50 ft; Column type: Packed; Start T: 67 C; CAS no: 100403; Active phase: Squalane; Carrier gas: He; Substrate: Chromosorb P; Data type: Kovats RI; Authors: Hively, R.A.; Hinton, R.E., Variation of the retention index with temperature on squalane substrates, J. Gas Chromatogr., 6, 1968, 203-217., Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column type: Capillary; Start T: 70 C; CAS no: 100403; Active phase: Squalane; Data type: Kovats RI; Authors: Schomburg, G., Gaschromatographische Retentionsdaten und struktur chemischer verbindungen. III. Alkylverzweigte und ungesattigte cyclische Kohlenwasserstoffe, J. Chromatogr., 23, 1966, 18-41.) NIST Spectra nist ri
      831 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 50 ft; Column type: Packed; Start T: 86 C; CAS no: 100403; Active phase: Squalane; Carrier gas: He; Substrate: Chromosorb P; Data type: Kovats RI; Authors: Hively, R.A.; Hinton, R.E., Variation of the retention index with temperature on squalane substrates, J. Gas Chromatogr., 6, 1968, 203-217.) NIST Spectra nist ri
    • Retention Index (Lee):

      120.1 (Program type: Ramp; Column cl… (show more) ass: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 30 m; Column type: Capillary; Heat rate: 8 K/min; Start T: 40 C; End T: 285 C; End time: 29.5 min; Start time: 3 min; CAS no: 100403; Active phase: DB-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Lee RI; Authors: Donnelly, J.R.; Abdel-Hamid, M.S.; Jeter, J.L.; Gurka, D.F., Application of gas chromatographic retention properties to the identification of environmental contaminants, J. Chromatogr., 642, 1993, 409-415.) NIST Spectra nist ri
    • Retention Index (Linear):

      822 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column diameter: 0.25 mm; Column length: 100 m; Column type: Capillary; Heat rate: 1 K/min; Start T: 30 C; End T: 220 C; CAS no: 100403; Active phase: Petrocol DH; Carrier gas: He; Phase thickness: 0.5 um; Data type: Linear RI; Authors: White, C.M.; Hackett, J.; Anderson, R.R.; Kail, S.; Spock, P.S., Linear temperature programmed retention indices of gasoline range hydrocarbons and chlorinated hydrocarbons on cross-linked polydimethylsiloxane, J. Hi. Res. Chromatogr., 15, 1992, 105-120.) NIST Spectra nist ri
      842 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column length: 1.5 m; Column type: Packed; Heat rate: 5 K/min; Start T: 60 C; End T: 280 C; CAS no: 100403; Active phase: SE-30; Substrate: Chromosorb W AW (80-100 mesh); Data type: Linear RI; Authors: Fischer, W.G.; Kusch, P., Automatic sampler for Curie-point pyrolysis-gas chromatography with on-column introduction of pyrolysates, J. Chromatogr., 518, 1990, 9-19.) NIST Spectra nist ri
      834 (Program type: Complex; Column… (show more) class: Standard non-polar; Column length: 3.05 m; Column type: Packed; Description: 40C(5min)=>10C/min =>200C or 250C (60min); CAS no: 100403; Active phase: SE-30; Substrate: Supelcoport; Chromosorb; Data type: Linear RI; Authors: Peng, C.T.; Ding, S.F.; Hua, R.L.; Yang, Z.C., Prediction of Retention Indexes I. Structure-Retention Index Relationship on Apolar Columns, J. Chromatogr., 436, 1988, 137-172.) NIST Spectra nist ri
      838.1 (Program type: Ramp; Column cl… (show more) ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 2.5 K/min; Start T: 50 C; End T: 200 C; CAS no: 100403; Active phase: DB-5; Carrier gas: He; Phase thickness: 1 um; Data type: Linear RI; Authors: Xu, X.; van Stee, L.L.P.; Williams, J.; Beens, J.; Adahchour, M.; Vreuls, R.J.J.; Brinkman, U.A.Th.; Lelieveld, J., Comprehensive two-dimensional gas chromatography (GC*GC) measurements of volatile organic compounds in the atmosphere, Atmos. Chem. Phys., 3, 2003, 665-682.) NIST Spectra nist ri
      1039 (Program type: Ramp; Column cl… (show more) ass: Standard polar; Column length: 3.05 m; Column type: Packed; Heat rate: 8 K/min; Start T: 40 C; End T: 200 C; End time: 60 min; Start time: 4 min; CAS no: 100403; Active phase: Carbowax 20M; Substrate: Supelcoport; Data type: Linear RI; Authors: Peng, C.T.; Yang, Z.C.; Ding, S.F., Prediction of rentention idexes. II. Structure-retention index relationship on polar columns, J. Chromatogr., 586, 1991, 85-112.) NIST Spectra nist ri

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

Density: 0.9±0.1 g/cm3
Boiling Point: 128.9±20.0 °C at 760 mmHg
Vapour Pressure: 12.7±0.1 mmHg at 25°C
Enthalpy of Vaporization: 35.1±0.8 kJ/mol
Flash Point: 20.0±0.0 °C
Index of Refraction: 1.544
Molar Refractivity: 38.1±0.3 cm3
#H bond acceptors: 0
#H bond donors: 0
#Freely Rotating Bonds: 1
#Rule of 5 Violations: 0
ACD/LogP: 3.31
ACD/LogD (pH 5.5): 3.34
ACD/BCF (pH 5.5): 204.53
ACD/KOC (pH 5.5): 1569.10
ACD/LogD (pH 7.4): 3.34
ACD/BCF (pH 7.4): 204.53
ACD/KOC (pH 7.4): 1569.10
Polar Surface Area: 0 Å2
Polarizability: 15.1±0.5 10-24cm3
Surface Tension: 31.8±3.0 dyne/cm
Molar Volume: 120.6±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) = 3.73
 Log Kow (Exper. database match) = 3.93
 Exper. Ref: Chem Inspect Test Inst (1992)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 131.43 (Adapted Stein & Brown method)
 Melting Pt (deg C): -61.89 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 13.4 (Mean VP of Antoine & Grain methods)
 MP (exp database): -108.9 deg C
 BP (exp database): 128 deg C
 VP (exp database): 1.57E+01 mm Hg at 25 deg C

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
 Water Solubility at 25 deg C (mg/L): 14.1
 log Kow used: 3.93 (expkow database)
 no-melting pt equation used
 Water Sol (Exper. database match) = 50 mg/L (25 deg C)
 Exper. Ref: YALKOWSKY,SH & DANNENFELSER,RM (1992)

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 154.76 mg/L
 Wat Sol (Exper. database match) = 50.00
 Exper. Ref: YALKOWSKY,SH & DANNENFELSER,RM (1992)

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 1.55E-001 atm-m3/mole
 Group Method: Incomplete
 Exper Database: 4.48E-02 atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]: 1.353E-001 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: 3.93 (exp database)
 Log Kaw used: 0.263 (exp database)
 Log Koa (KOAWIN v1.10 estimate): 3.667
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : 0.6960
 Biowin2 (Non-Linear Model) : 0.8134
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 2.9601 (weeks )
 Biowin4 (Primary Survey Model) : 3.6917 (days-weeks )
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : 0.4929
 Biowin6 (MITI Non-Linear Model): 0.5313
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): 0.1479
 Ready Biodegradability Prediction: NO

 Hydrocarbon Biodegradation (BioHCwin v1.01):
 LOG BioHC Half-Life (days) : 0.7501
 BioHC Half-Life (days) : 5.6246

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
 Vapor pressure (liquid/subcooled): 2.09E+003 Pa (15.7 mm Hg)
 Log Koa (Koawin est ): 3.667
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 1.43E-009 
 Octanol/air (Koa) model: 1.14E-009 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 5.18E-008 
 Mackay model : 1.15E-007 
 Octanol/air (Koa) model: 9.12E-008 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 89.3457 E-12 cm3/molecule-sec
 Half-Life = 0.120 Days (12-hr day; 1.5E6 OH/cm3)
 Half-Life = 1.437 Hrs
 Ozone Reaction:
 OVERALL Ozone Rate Constant = 21.200001 E-17 cm3/molecule-sec
 Half-Life = 0.054 Days (at 7E11 mol/cm3)
 Half-Life = 1.297 Hrs
 Fraction sorbed to airborne particulates (phi): 8.32E-008 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 517.8
 Log Koc: 2.714 

 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 = 2.326 (BCF = 211.9)
 log Kow used: 3.93 (expkow database)

 Volatilization from Water:
 Henry LC: 0.0448 atm-m3/mole (Henry experimental database)
 Half-Life from Model River: 1.075 hours
 Half-Life from Model Lake : 98.94 hours (4.122 days)

 Removal In Wastewater Treatment (recommended maximum 95%):
 Total removal: 95.23 percent
 Total biodegradation: 0.07 percent
 Total sludge adsorption: 16.00 percent
 Total to Air: 79.16 percent
 (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
 Mass Amount Half-Life Emissions
 (percent) (hr) (kg/hr)
 Air 0.519 0.894 1000 
 Water 35 360 1000 
 Soil 60.6 720 1000 
 Sediment 3.83 3.24e+003 0 
 Persistence Time: 176 hr




 

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