Trimethylsilyl trimethylsiloxyacetate C8H20O3Si2 structure

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C8H20O3Si2 structure
Molecular Formula C8H20O3Si2
Average mass 220.414 Da
Density 0.9±0.1 g/cm3
Boiling Point 176.5±23.0 °C at 760 mmHg
Flash Point 43.3±0.0 °C
Molar Refractivity 60.1±0.3 cm3
Polarizability 23.8±0.5 10-24cm3
Surface Tension 20.2±3.0 dyne/cm
Molar Volume 241.9±3.0 cm3
  • Experimental data
  • Predicted – ACD/Labs
  • Predicted – EPISuite
  • Predicted – ChemAxon
  • Experimental Physico-chemical Properties
    • Experimental Refraction Index:

      1.412 Gelest
      [SIT8622.0]
  • Gas Chromatography
    • Retention Index (Kovats):

      880 (estimated with error: 89) NIST Spectra mainlib_352446, replib_10366, replib_22694, replib_78836, replib_366880, replib_157076
    • Retention Index (Normal Alkane):

      1082.4 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column length: 25 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 80 C; End T: 250 C; End time: 5 min; CAS no: 33581770; Active phase: SE-33; Carrier gas: He; Data type: Normal alkane RI; Authors: Daolio, S.; Bonsembiante, M.; Bittante, G.; Ramanzin, M.; Rinaldo, P., Ruminal organic acid analysis by gas chromatography/mass spectrometry, J. Agric. Food Chem., 37(4), 1989, 970-974.) NIST Spectra nist ri
      1080 (Program type: Ramp; Column cl… (show more) ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; CAS no: 33581770; Active phase: HP-5; Carrier gas: Helium; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Isidorov, V.A.; Lech, P.; Zolciak, A.; Rusak, N.; Szczepaniak, L., Gas Chromatographic – nass spectrometric investigation of metabolites from the needles and roots of pine seedlings at early stages of pathogenic fungi Armillaria ostoyae attack, Trees, 22, 2008, 531-542.) NIST Spectra nist ri
      1083 (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: 3 K/min; Start T: 50 C; End T: 300 C; End time: 30 min; CAS no: 33581770; Active phase: HP-5; Carrier gas: Helium; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Isidorov, V.A.; Lech, P.; Zolciak, A.; Rusak, N.; Szczepaniak, L., Gas Chromatographic – nass spectrometric investigation of metabolites from the needles and roots of pine seedlings at early stages of pathogenic fungi Armillaria ostoyae attack, Trees, 22, 2008, 531-542.) NIST Spectra nist ri
      1085 (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: 4 K/min; Start T: 70 C; End T: 280 C; End time: 3 min; Start time: 3 min; CAS no: 33581770; Active phase: HP-5MS; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Lee, B.Y.; Yanamandra, K.; Thurmon, T.F., Quantitative estimation of organic analytes with a capillary column, Am. Clin. Lab., , 2002, 30-34.) NIST Spectra nist ri
      1084.7 (Program type: Ramp; Column cl… (show more) ass: Semi-standard non-polar; Column diameter: 0.2 mm; Column length: 6 m; Column type: Capillary; Heat rate: 20 K/min; Start T: 50 C; End T: 325 C; CAS no: 33581770; Active phase: DB-5; Carrier gas: He; Phase thickness: 0.4 um; Data type: Normal alkane RI; Authors: Schultz, G.A.; Chamberlin, B.A.; Sweeley, C.C.; Watson, J.T.; Allison, J., Complex mixture analysis based on gas chromatography-mass spectrometry with time array detection using a beam deflection time-of-flight mass spectrometer, J. Chromatogr., 590, 1992, 329-339.) NIST Spectra nist ri
    • Retention Index (Linear):

      1072 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column diameter: 0.15 mm; Column length: 25 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 90 C; End T: 270 C; End time: 7 min; Start time: 1 min; CAS no: 33581770; Active phase: CP Sil 5 CB; Phase thickness: 0.12 um; Data type: Linear RI; Authors: Halket, J.N.; Przyborowska, A.; Stein, S.E.; Mallard, W.G.; Down, S.; Chalmers, R., Deconvolution gas chromatography / mass spectrometry of urinary organic acids – potential for pattern recognition and automated identification of metabolic disorders, Rapid Commun. Mass spectrom., 13, 1999, 279-284., Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column type: Capillary; CAS no: 33581770; Active phase: Methyl Silicone; Data type: Linear RI; Authors: Geissler, M.; Kawana, S.; Nakagawa, K., Analysis of urine organic acids using linear retention indices for the determination of metabolic disorders, LC-GC Europe, , 2007, 26-27.) NIST Spectra nist ri
      1077 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column diameter: 0.22 mm; Column length: 10 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 70 C; End T: 270 C; CAS no: 33581770; Active phase: OV-1; Carrier gas: He; Phase thickness: 0.17 um; Data type: Linear RI; Authors: Lefevere, M.F.; Verhaeghe, B.J.; Declerck, D.H.; Van Bocxlaer, J.F.; De Leenheer, A.P.; De Sagher, R.M., Metabolic Profiling of Urinary Organic Acids by Single and Multicolumn Capillary Gas Chromatography, J. Chromatogr. Sci., 27, 1989, 23-29., Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column diameter: 0.53 mm; Column length: 30 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 70 C; End T: 290 C; CAS no: 33581770; Active phase: DB-1; Carrier gas: He; Phase thickness: 1 um; Data type: Linear RI; Authors: Hoffmann, G.; Aramaki, S.; Blum-Hoffmann, E.; Nyhan, W.L.; Sweetman, L., Quantitative analysis for organic acids in biological samples: batch isolation followed by gas chromatographic-mass spectrometric analysis, Clin. Chem., 35(4), 1989, 587-595.) NIST Spectra nist ri
      1070 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column length: 1.8 m; Column type: Packed; Heat rate: 28 K/min; Start T: 70 C; End T: 290 C; Start time: .5 min; CAS no: 33581770; Active phase: OV-1; Carrier gas: N2; Substrate: 100-120 mesh; Data type: Linear RI; Authors: Tanaka, K.; Hine, D.G.; West-Dull, A.; Lynn, T.B., Gas-chromatographic method of analysis for urinary organic acids. I. Retention indices of 155 metabolically important compounds, Clin. Chem., 26(13), 1980, 1839-1846., Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column type: Capillary; Heat rate: 6 K/min; Start T: 60 C; End T: 280 C; End time: 5 min; Start time: 0.5 min; CAS no: 33581770; Active phase: CP Sil 5 CB; Carrier gas: N2; Data type: Linear RI; Authors: Wurth, C.; Kumps, A.; Mardens, Y., Urinary organic acids: Retention indices on two capillary gas chromatography columns, J. Chromatogr., 491, 1989, 186-192., Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column type: Packed; CAS no: 33581770; Active phase: OV-101; Data type: Linear RI; Authors: Tanaka, K.; Hine, D.G., Compilation of Gas Chromatographic Retention Indices of 163 Metabolically Important Organic Acids, and Their Use in Detection of Patients with Organic Acidurias, J. Chromatogr., 239, 1982, 301-322.) NIST Spectra nist ri
      1073 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column type: Capillary; CAS no: 33581770; Active phase: DB-1; Carrier gas: He; Data type: Linear RI; Authors: Tsai, M.Y.; Oliphant, C.; Josephson, M.W., Identification of Metabolites Diagnostic for Organic Acidurias by Simultaneous Dual-Column Capillary Gas Chromatography, J. Chromatogr., 341, 1985, 1-10.) NIST Spectra nist ri
      1045 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column length: 6 ft; Column type: Packed; Heat rate: 10 K/min; Start T: 100 C; End T: 325 C; CAS no: 33581770; Active phase: OV-1; Carrier gas: He; Substrate: Chromosorb W HP (80-100 mesh); Data type: Linear RI; Authors: Butts, W.C., Two-Column Gas Chromatography of Trimethylsilyl Derivatives of Biochemically Significant Compounds, Anal. Biochemistry, 46, 1972, 187-199.) NIST Spectra nist ri
      1070.5 (Program type: Complex; Column… (show more) class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: Multi-step temperature program; T(initial)=60C; T(final)=270C; CAS no: 33581770; Active phase: VF-5MS; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Tret’yakov, K.V., Retention Data. NIST Mass Spectrometry Data Center., 2008.) NIST Spectra nist ri
      1078 (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: 4 K/min; Start T: 100 C; End T: 290 C; End time: 10 min; Start time: 4 min; CAS no: 33581770; Active phase: DB-5; Carrier gas: He; Phase thickness: 1 um; Data type: Linear RI; Authors: Kimura, M.; Yamamoto, T.; Yamaguchi, S., Automated metabolic profiling and interpretation of GC/MS data for organic acidemia screening: a personal computer-based system, Tohoku J. Exp. Med., 188, 1999, 317-334.) NIST Spectra nist ri
      1080 (Program type: Ramp; Column cl… (show more) ass: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 25 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 70 C; End T: 270 C; CAS no: 33581770; Active phase: SE-52; Carrier gas: He; Phase thickness: 0.52 um; Data type: Linear RI; Authors: Lefevere, M.F.; Verhaeghe, B.J.; Declerck, D.H.; Van Bocxlaer, J.F.; De Leenheer, A.P.; De Sagher, R.M., Metabolic Profiling of Urinary Organic Acids by Single and Multicolumn Capillary Gas Chromatography, J. Chromatogr. Sci., 27, 1989, 23-29.) NIST Spectra nist ri
      1081 (Program type: Ramp; Column cl… (show more) ass: Semi-standard non-polar; Column diameter: 0.31 mm; Column length: 25 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 50 C; End T: 300 C; CAS no: 33581770; Active phase: Ultra-2; Carrier gas: He; Phase thickness: 0.52 um; Data type: Linear RI; Authors: Tuchman, M.; Bowers, L.D.; Fregien, K.D.; Crippin, P.J.; Krivit, W., Capillary Gas Chromatographic Separation of Urinary Organic Acids. Retention Indices of 101 Urinary Acids on a 5% Phenylmethyl Silicone Capillary Column, J. Chromatogr. Sci., 22, 1984, 198-202.) 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: 176.5±23.0 °C at 760 mmHg
Vapour Pressure: 1.1±0.3 mmHg at 25°C
Enthalpy of Vaporization: 41.3±3.0 kJ/mol
Flash Point: 43.3±0.0 °C
Index of Refraction: 1.411
Molar Refractivity: 60.1±0.3 cm3
#H bond acceptors: 3
#H bond donors: 0
#Freely Rotating Bonds: 5
#Rule of 5 Violations: 0
ACD/LogP: 2.78
ACD/LogD (pH 5.5): 2.66
ACD/BCF (pH 5.5): 62.23
ACD/KOC (pH 5.5): 669.52
ACD/LogD (pH 7.4): 2.66
ACD/BCF (pH 7.4): 62.23
ACD/KOC (pH 7.4): 669.52
Polar Surface Area: 36 Å2
Polarizability: 23.8±0.5 10-24cm3
Surface Tension: 20.2±3.0 dyne/cm
Molar Volume: 241.9±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) = 3.16

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 183.62 (Adapted Stein & Brown method)
 Melting Pt (deg C): -18.67 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 0.809 (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
 Water Solubility at 25 deg C (mg/L): 68.98
 log Kow used: 3.16 (estimated)
 no-melting pt equation used

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 95097 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
 Class(es) found:
 Esters
 Silanes (alkoxy)

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 5.12E-003 atm-m3/mole
 Group Method: Incomplete
 Henrys LC [VP/WSol estimate using EPI values]: 3.401E-003 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: 3.16 (KowWin est)
 Log Kaw used: -0.679 (HenryWin est)
 Log Koa (KOAWIN v1.10 estimate): 3.839
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : 0.6426
 Biowin2 (Non-Linear Model) : 0.4697
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 2.7121 (weeks-months)
 Biowin4 (Primary Survey Model) : 3.5297 (days-weeks )
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : 0.1083
 Biowin6 (MITI Non-Linear Model): 0.0359
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): 0.3846
 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): 98.1 Pa (0.736 mm Hg)
 Log Koa (Koawin est ): 3.839
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 3.06E-008 
 Octanol/air (Koa) model: 1.69E-009 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 1.1E-006 
 Mackay model : 2.45E-006 
 Octanol/air (Koa) model: 1.36E-007 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 2.6638 E-12 cm3/molecule-sec
 Half-Life = 4.015 Days (12-hr day; 1.5E6 OH/cm3)
 Half-Life = 48.184 Hrs
 Ozone Reaction:
 No Ozone Reaction Estimation
 Fraction sorbed to airborne particulates (phi): 1.77E-006 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 252.1
 Log Koc: 2.402 

 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 = 1.731 (BCF = 53.79)
 log Kow used: 3.16 (estimated)

 Volatilization from Water:
 Henry LC: 0.00512 atm-m3/mole (estimated by Bond SAR Method)
 Half-Life from Model River: 1.685 hours
 Half-Life from Model Lake : 142.9 hours (5.953 days)

 Removal In Wastewater Treatment:
 Total removal: 68.21 percent
 Total biodegradation: 0.06 percent
 Total sludge adsorption: 4.73 percent
 Total to Air: 63.42 percent
 (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
 Mass Amount Half-Life Emissions
 (percent) (hr) (kg/hr)
 Air 14.7 96.4 1000 
 Water 26.1 900 1000 
 Soil 58.4 1.8e+003 1000 
 Sediment 0.853 8.1e+003 0 
 Persistence Time: 311 hr




 

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