Cyclooctatetraene C8H8 structure

Flashcard maker : Suzette Hendon

Molecular Formula C8H8
Average mass 104.149 Da
Density 0.9±0.1 g/cm3
Boiling Point 140.5±0.0 °C at 760 mmHg
Flash Point 22.2±0.0 °C
Molar Refractivity 35.3±0.3 cm3
Polarizability 14.0±0.5 10-24cm3
Surface Tension 38.0±3.0 dyne/cm
Molar Volume 115.1±3.0 cm3
  • Experimental data
  • Predicted – ACD/Labs
  • Predicted – EPISuite
  • Predicted – ChemAxon
  • Predicted – Mcule
  • Experimental Physico-chemical Properties
    • Experimental Melting Point:

      -5 °C Alfa Aesar
      -27 °C Oxford University Chemical Safety Data (No longer updated) More details
      -5 °C Jean-Claude Bradley Open Melting Point Dataset 639
      -27 °C Jean-Claude Bradley Open Melting Point Dataset 13375, 15688
      -4.7 °C Jean-Claude Bradley Open Melting Point Dataset 25260
      -5 °C Matrix Scientific
      -5 °C Alfa Aesar B22636
      -5 °C Matrix Scientific 021368
    • Experimental Boiling Point:

      142-143 °C Alfa Aesar
      142-143 °C Oxford University Chemical Safety Data (No longer updated) More details
      142-143 °C Matrix Scientific
      142-143 °C Alfa Aesar B22636
      142-143 °C Matrix Scientific 021368
    • Experimental Optical Rotation:

      1.537 Matrix Scientific 021368
    • Experimental Flash Point:

      20 °C Alfa Aesar
      22 °C Oxford University Chemical Safety Data (No longer updated) More details
      20 °C Alfa Aesar
      22 °C Biosynth C-9270
      20 °F (-6.6667 °C)
      Alfa Aesar B22636
    • Experimental Gravity:

      0.925 g/mL Alfa Aesar B22636
      0.925 g/mL Matrix Scientific 021368
    • Experimental Refraction Index:

      1.537 Alfa Aesar B22636
      1.537 Matrix Scientific 021368
  • Miscellaneous
    • Appearance:

      colourless to light yellow liquid Oxford University Chemical Safety Data (No longer updated) More details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

      Unstable – commercial product may be stabilized by the addition of a small amount ofhydroquinone. May form explosive peroxides in storage. Do not distill to small volume. Readily forms explosive mixtu
      res with air. Flammable. Incompatible with air, strong oxidizing agents. Oxford University Chemical Safety Data (No longer updated) More details
    • Safety:

      10-36/37/38-62 Alfa Aesar B22636
      10-36/37/38-65 Alfa Aesar B22636
      16-26-37-62 Alfa Aesar B22636
      3 Alfa Aesar B22636
      9-16-23-26-33-36/37-60-62 Alfa Aesar B22636
      Danger Alfa Aesar B22636
      Danger Biosynth C-9270
      DANGER: FLAMMABLE, irritates skin, eyes, lungs Alfa Aesar B22636
      GHS02; GHS07; GHS08 Biosynth C-9270
      H225; H304; H315; H319; H335 Biosynth C-9270
      H225-H304-H315-H319-H335 Alfa Aesar B22636
      Highly Flammable/Teratogenic/Harmful/Air Sensitive/Keep Cold/Store under Argon SynQuest 1400-1-09
      P210; P261; P331; P301+P310; P305+P351+P338 Biosynth C-9270
      P210-P301+P310-P303+P361+P353-P305+P351+P338-P405-P501a Alfa Aesar B22636
      REFRIGERATE, FLAMMABLE Matrix Scientific 021368
      Safety glasses, adequate ventilation. If using a previously-openedbottle test for peroxides prior to use. If white crystals are apparent aroundthe neck of a bottle, do not open since peroxides may dec
      omposeexplosively as a result of the friction of turning the bottle cap. Oxford University Chemical Safety Data (No longer updated) More details
  • Gas Chromatography
    • Retention Index (Kovats):

      888 (estimated with error: 39) NIST Spectra mainlib_1259, replib_113230, replib_154586, replib_61548
      850 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column type: Capillary; Start T: 70 C; CAS no: 629209; 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
    • Retention Index (Lee):

      136.7 (Program type: Ramp; Column cl… (show more) ass: Semi-standard non-polar; Column diameter: 0.2 mm; Column length: 50 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 50 C; End T: 280 C; End time: 30 min; CAS no: 629209; Active phase: HP-5MS; Carrier gas: He; Phase thickness: 0.33 um; Data type: Lee RI; Authors: Wang, S.-F.; Liu, B.-Z.; Sun, K.-J.; Su, Q.-D., Gas chromatographic-mass spectrometric determination of polycyclic aromatic hydrocarbons formed during the pyrolysis of phenylalanine, J. Chromatogr. A, 1025, 2004, 255-261.) NIST Spectra nist ri
    • Retention Index (Normal Alkane):

      889 (Program type: Complex; Column… (show more) class: Standard non-polar; Column length: 20 ft; Column type: Packed; Description: 50C910min)=>20C/min=>90(6min)=>10C/min=>150C(hold); CAS no: 629209; Active phase: SE-30; Carrier gas: N2; Substrate: Chromosorb W; Data type: Normal alkane RI; Authors: Robinson, P.G.; Odell, A.L., A system of standard retention indices and its uses. The characterisation of stationary phases and the prediction of retention indices, J. Chromatogr., 57, 1971, 1-10.) NIST Spectra nist ri
      850 (Program type: Ramp; Column cl… (show more) ass: Semi-standard non-polar; Column type: Capillary; CAS no: 629209; Active phase: Squalane; Data type: Normal alkane RI; Authors: Chen, H.-F., Quantitative prediction of gas chromatography retention indices with support vector machines, radial basis neutral networks and multiple linear regression, Anal. Chim. Acta, 609, 2008, 24-36.) NIST Spectra nist ri
      894 (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: 10 K/min; Start T: 50 C; End T: 200 C; End time: 2 min; Start time: 3 min; CAS no: 629209; Active phase: CP Sil 8 CB; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Wang, H.-Y.; Guo-Y. -L., Rapid analysis of the volatile compounds in the rhizomes of Rhodiola sachalinensis and Rhodiola sacra by static headspace-gas chromatography-tandem mass spectrometry, Anal. Letters, 37(10), 2004, 2151-2161.) NIST Spectra nist ri
      883.4 (Program type: Ramp; Column cl… (show more) ass: Semi-standard non-polar; Column diameter: 0.2 mm; Column length: 50 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 50 C; End T: 280 C; End time: 30 min; CAS no: 629209; Active phase: HP-5MS; Carrier gas: He; Phase thickness: 0.33 um; Data type: Normal alkane RI; Authors: Wang, S.-F.; Liu, B.-Z.; Sun, K.-J.; Su, Q.-D., Gas chromatographic-mass spectrometric determination of polycyclic aromatic hydrocarbons formed during the pyrolysis of phenylalanine, J. Chromatogr. A, 1025, 2004, 255-261.) NIST Spectra nist ri
      846 (Program type: Complex; Column… (show more) class: Semi-standard non-polar; Column length: 10 ft; Column type: Packed; Description: 25C(5min)=>2C/min=>35=>4C/min=>95C(hold); CAS no: 629209; Active phase: Squalane; Carrier gas: N2; Substrate: Embacel; Data type: Normal alkane RI; Authors: Robinson, P.G.; Odell, A.L., A system of standard retention indices and its uses. The characterisation of stationary phases and the prediction of retention indices, J. Chromatogr., 57, 1971, 1-10.) NIST Spectra nist ri
      1244 (Program type: Ramp; Column cl… (show more) ass: Standard polar; Column type: Capillary; CAS no: 629209; Active phase: Carbowax 20M; Data type: Normal alkane RI; Authors: Editorial paper, Solid Phase Microextraction (SPME) Application Guide, The Reporter Europe (Supelco), 16(5), 2005, 12-12.) NIST Spectra nist ri
      1248.7 (Program type: Ramp; Column cl… (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 50 m; Column type: Capillary; Heat rate: 8 K/min; Start T: 60 C; End T: 220 C; CAS no: 629209; Active phase: Carbowax 20M; Carrier gas: He; Data type: Normal alkane RI; Authors: Riganakos, K.A.; Koller, W.D.; Ehlermann, D.A.E.; Bauer, B.; Kontominas, M.G., Effects of ionizing radiation on properties of monolayer and multilayer flexible food packaging materials, Radiat. Phys. Chem., 54, 1999, 527-540.) NIST Spectra nist ri
      1258.8 (Program type: Ramp; Column cl… (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 50 m; Column type: Capillary; Heat rate: 8 K/min; Start T: 60 C; End T: 220 C; CAS no: 629209; Active phase: Carbowax 20M; Carrier gas: He; Data type: Normal alkane RI; Authors: Riganakos, K.A.; Koller, W.D.; Ehlermann, D.A.E.; Bauer, B.; Kontominas, M.G., Effects of ionizing radiation on properties of monolayer and multilayer flexible food packaging materials, Radiat. Phys. Chem., 54, 1999, 527-540.) NIST Spectra nist ri
      1261.2 (Program type: Ramp; Column cl… (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 50 m; Column type: Capillary; Heat rate: 8 K/min; Start T: 60 C; End T: 220 C; CAS no: 629209; Active phase: Carbowax 20M; Carrier gas: He; Data type: Normal alkane RI; Authors: Riganakos, K.A.; Koller, W.D.; Ehlermann, D.A.E.; Bauer, B.; Kontominas, M.G., Effects of ionizing radiation on properties of monolayer and multilayer flexible food packaging materials, Radiat. Phys. Chem., 54, 1999, 527-540.) NIST Spectra nist ri
      1261.4 (Program type: Ramp; Column cl… (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 50 m; Column type: Capillary; Heat rate: 8 K/min; Start T: 60 C; End T: 220 C; CAS no: 629209; Active phase: Carbowax 20M; Carrier gas: He; Data type: Normal alkane RI; Authors: Riganakos, K.A.; Koller, W.D.; Ehlermann, D.A.E.; Bauer, B.; Kontominas, M.G., Effects of ionizing radiation on properties of monolayer and multilayer flexible food packaging materials, Radiat. Phys. Chem., 54, 1999, 527-540.) NIST Spectra nist ri
    • Retention Index (Linear):

      880 (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: 629209; 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., Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column length: 3.05 m; Column type: Packed; Heat rate: 10 K/min; Start T: 40 C; End T: 210 C; End time: 30 min; Start time: 10 min; CAS no: 629209; Active phase: SE-30; Carrier gas: He; Substrate: Chromosorb AW; Data type: Linear RI; Authors: Buchman, O.; Cao, G.-Y.; Peng, C.T., Structure assignment by retention index in gas-liquid radiochromatography of substituted cyclohexenes, J. Chromatogr., 312, 1984, 75-90.) NIST Spectra nist ri
      1244 (Program type: Ramp; Column cl… (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 45 C; End T: 250 C; Start time: 10 s; CAS no: 629209; Active phase: Carbowax 20M; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Verzera, A.; Campisi, S.; Zappala, M., SUPELCO. Using SPME-GC-MS to characterize volatile components of honey as indicators of botanical origin, 2005., Program type: Ramp; Column cl… (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 45 C; End T: 250 C; Start time: 10 s; CAS no: 629209; Active phase: CP-Wax 52CB; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Verzera, A.; Campisi, S.; Zappala, M.; Bonaccorsi, I., SPME-GC-MS analysis of honey volatile components for the characterization of different floral origin, Am. Lab. Fairfield Conn., 33(15), 2001, 18-21.) NIST Spectra nist ri
      1264 (Program type: Ramp; Column cl… (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 50 C; End T: 230 C; CAS no: 629209; Active phase: DB-Wax; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Shimoda, M.; Peralta, R.R.; Osajima, Y., Headspace gas analysis of fish sauce, J. Agric. Food Chem., 44, 1996, 3601-3605.) NIST Spectra nist ri
      1199 (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: 629209; 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
      1226 (Program type: Ramp; Column cl… (show more) ass: Standard polar; Column length: 3.05 m; Column type: Packed; Heat rate: 10 K/min; Start T: 40 C; End T: 210 C; End time: 30 min; Start time: 10 min; CAS no: 629209; Active phase: Carbowax 20M; Carrier gas: He; Substrate: Supelcoport; Data type: Linear RI; Authors: Buchman, O.; Cao, G.-Y.; Peng, C.T., Structure assignment by retention index in gas-liquid radiochromatography of substituted cyclohexenes, J. Chromatogr., 312, 1984, 75-90.) 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: 140.5±0.0 °C at 760 mmHg
Vapour Pressure: 7.6±0.1 mmHg at 25°C
Enthalpy of Vaporization: 36.2±0.8 kJ/mol
Flash Point: 22.2±0.0 °C
Index of Refraction: 1.526
Molar Refractivity: 35.3±0.3 cm3
#H bond acceptors: 0
#H bond donors: 0
#Freely Rotating Bonds: 0
#Rule of 5 Violations: 0
ACD/LogP: 2.55
ACD/LogD (pH 5.5): 2.92
ACD/BCF (pH 5.5): 96.87
ACD/KOC (pH 5.5): 919.04
ACD/LogD (pH 7.4): 2.92
ACD/BCF (pH 7.4): 96.87
ACD/KOC (pH 7.4): 919.04
Polar Surface Area: 0 Å2
Polarizability: 14.0±0.5 10-24cm3
Surface Tension: 38.0±3.0 dyne/cm
Molar Volume: 115.1±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) = 3.30
 Log Kow (Exper. database match) = 3.08
 Exper. Ref: Hansch,C et al. (1995)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 152.52 (Adapted Stein & Brown method)
 Melting Pt (deg C): -55.11 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 7.79 (Mean VP of Antoine & Grain methods)
 MP (exp database): -4.7 deg C
 BP (exp database): 140.5 deg C
 VP (exp database): 7.80E+00 mm Hg at 25 deg C

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
 Water Solubility at 25 deg C (mg/L): 77.29
 log Kow used: 3.08 (expkow database)
 no-melting pt equation used

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 223.91 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 6.22E-002 atm-m3/mole
 Group Method: 8.88E-004 atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]: 1.381E-002 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: 3.08 (exp database)
 Log Kaw used: 0.405 (HenryWin est)
 Log Koa (KOAWIN v1.10 estimate): 2.675
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : 0.6980
 Biowin2 (Non-Linear Model) : 0.8220
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 2.9690 (weeks )
 Biowin4 (Primary Survey Model) : 3.6975 (days-weeks )
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : 0.4518
 Biowin6 (MITI Non-Linear Model): 0.4371
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): 0.2479
 Ready Biodegradability Prediction: NO

 Hydrocarbon Biodegradation (BioHCwin v1.01):
 LOG BioHC Half-Life (days) : 0.4367
 BioHC Half-Life (days) : 2.7331

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
 Vapor pressure (liquid/subcooled): 1.04E+003 Pa (7.8 mm Hg)
 Log Koa (Koawin est ): 2.675
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 2.88E-009 
 Octanol/air (Koa) model: 1.16E-010 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 1.04E-007 
 Mackay model : 2.31E-007 
 Octanol/air (Koa) model: 9.29E-009 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 205.1900 E-12 cm3/molecule-sec
 Half-Life = 0.052 Days (12-hr day; 1.5E6 OH/cm3)
 Half-Life = 0.626 Hrs
 Ozone Reaction:
 OVERALL Ozone Rate Constant = 1.620000 E-17 cm3/molecule-sec
 Half-Life = 0.707 Days (at 7E11 mol/cm3)
 Half-Life = 16.978 Hrs
 Fraction sorbed to airborne particulates (phi): 1.67E-007 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 562.9
 Log Koc: 2.750 

 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 = 1.672 (BCF = 46.95)
 log Kow used: 3.08 (expkow database)

 Volatilization from Water:
 Henry LC: 0.000888 atm-m3/mole (estimated by Group SAR Method)
 Half-Life from Model River: 1.714 hours
 Half-Life from Model Lake : 104.3 hours (4.345 days)

 Removal In Wastewater Treatment:
 Total removal: 31.34 percent
 Total biodegradation: 0.10 percent
 Total sludge adsorption: 5.39 percent
 Total to Air: 25.85 percent
 (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
 Mass Amount Half-Life Emissions
 (percent) (hr) (kg/hr)
 Air 0.274 1.17 1000 
 Water 20.9 360 1000 
 Soil 78.4 720 1000 
 Sediment 0.407 3.24e+003 0 
 Persistence Time: 331 hr




 

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