Ethyl 2-hydroxy-3-methylbutanoate

Experimental data
Predicted - ACD/Labs
Predicted - EPISuite
Predicted - ChemAxon

Gas Chromatography

Retention Index (Kovats):

983 (estimated with error: 89) NIST Spectra mainlib_164508, replib_164509, replib_4319

Retention Index (Normal Alkane):

975 (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: 4 K/min; Start T: 40 C; End T: 250 C; End time: 5 min; Start time: 2 min; CAS no: 2441067; Active phase: DB-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Xu, Y.; Fan, W.; Qian, M.C., Characterization of Aroma Compounds in Apple Cider Using Solvent-Assisted Flavor Evaporation and Headspace Solid-Phase Microextraction, J. Agric. Food Chem., 55, 2007, 3051-3057., 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: 6 K/min; Start T: 40 C; End T: 230 C; End time: 15 min; Start time: 2 min; CAS no: 2441067; Active phase: DB-5; Carrier gas: N2; Phase thickness: 1 um; Data type: Normal alkane RI; Authors: Fan, W.; Qian, M.C., Identification of aroma compounds in Chinese 'Yanghe Daqu' liquor by normal phase chromatography fractionation followed by gas chromatography/olfactometry, Flavour Fragr. J., 21, 2006, 333-342.) NIST Spectra nist ri

968 (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: 5 K/min; Start T: 40 C; End T: 220 C; End time: 20 min; Start time: 1 min; CAS no: 2441067; Active phase: SPB-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Ledauphin, J.; Guichard, H.; Saint-Clair, J.-F.; Picoche, B.; Barillier, D., Chemical and sensorial aroma characterization of freshly distilled calvados. 2. Identification of volatile compounds and key odorants, J. Agric. Food Chem., 51, 2003, 433-442.) NIST Spectra nist ri

963.8 (Program type: Complex; Column... (show more) class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: 40 0C (6 min) ^ 2.5 0C/min -> 150 0C ^ 90 0C/min -> 250 0C; CAS no: 2441067; Active phase: HP-5; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Jordan, M.J.; Tandon, K.; Shaw, P.E.; Goodner, K.L., Aromatic profile of aqueous banana essence and banana fruit by gas chromatography-mass spectrometry (GC-MS) and gas chromatography-olfactometry (GC-O), J. Agric. Food Chem., 49, 2001, 4813-4817.) NIST Spectra nist ri

1422 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; CAS no: 2441067; Active phase: DB-Wax; Carrier gas: Helium; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Zhao, Y.; Xu, Y.; Li, J.; Fan, W.; Jiang, W., Profile of volatile compounds in 11 brandies by headspace solid-phase microextraction followed by gas chromatography-mass spectrometry, J. Food. Sci., 74(2), 2009, c90-c99.) NIST Spectra nist ri

1426 (Program type: Complex; Column... (show more) class: Standard polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: 50 0C (2 min) ^ 6 0C/min -> 150 0C ^ 8 0C/min -> 230 0C (15 min); CAS no: 2441067; Active phase: DB-Wax; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Tian, Y.; Zhang, X.; Huang, T.; Zou, K.; Zhou, J., Research advances on the essential oils from leaves of Eucalyptus, Food Fermentation Ind. (Chinese), 33(10), 2007, 143-147., Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 40 C; End T: 230 C; End time: 5 min; Start time: 2 min; CAS no: 2441067; Active phase: DB-Wax; Carrier gas: Helium; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Zhao, Y.; Xu, Y.; Li, J.; Fan, W.; Jiang, W., Profile of volatile compounds in 11 brandies by headspace solid-phase microextraction followed by gas chromatography-mass spectrometry, J. Food. Sci., 74(2), 2009, c90-c99.) NIST Spectra nist ri

1397 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 40 C; End T: 230 C; End time: 5 min; Start time: 2 min; CAS no: 2441067; Active phase: DB-Wax; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Xu, Y.; Fan, W.; Qian, M.C., Characterization of Aroma Compounds in Apple Cider Using Solvent-Assisted Flavor Evaporation and Headspace Solid-Phase Microextraction, J. Agric. Food Chem., 55, 2007, 3051-3057., Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 30 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 40 C; End T: 230 C; End time: 5 min; Start time: 2 min; CAS no: 2441067; Active phase: DB-Wax; Carrier gas: N2; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Fan, W.; Qian, M.C., Headspace Solid Phase Microextraction and Gas Chromatography-Olfactometry Dilution Analysis of Young and Aged Chinese "Yanghe Daqu" Liquors, J. Agric. Food Chem., 53, 2005, 7931-7938.) NIST Spectra nist ri

1399 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 30 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 40 C; End T: 230 C; End time: 15 min; Start time: 2 min; CAS no: 2441067; Active phase: DB-Wax; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Fan, W.; Qian, M.C., Characterization of Aroma Compounds of Chinese "Wuliangye" and "Jiannanchun" Liquors by Aroma Extract Dilution Analysis, J. Agric. Food Chem., 54, 2006, 2695-2704.) NIST Spectra nist ri

1425 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 30 m; Column type: Capillary; Heat rate: 6 K/min; Start T: 40 C; End T: 230 C; End time: 15 min; Start time: 2 min; CAS no: 2441067; Active phase: DB-Wax; Carrier gas: N2; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Fan, W.; Qian, M.C., Identification of aroma compounds in Chinese 'Yanghe Daqu' liquor by normal phase chromatography fractionation followed by gas chromatography/olfactometry, Flavour Fragr. J., 21, 2006, 333-342.) NIST Spectra nist ri

1445 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column type: Capillary; CAS no: 2441067; Active phase: Carbowax 20M; Data type: Normal alkane RI; Authors: Vinogradov, B.A., Production, composition, properties and application of essential oils, 2004.) NIST Spectra nist ri

Retention Index (Linear):

987 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 30 m; Column type: Capillary; CAS no: 2441067; Active phase: VF-5MS; Carrier gas: He; Phase thickness: 1 um; Data type: Linear RI; Authors: Campo, E.; Cacho, J.; Ferreira, V., Multidimensional chromatographic approach applied to the identification of novel aroma compounds in wine. Identification of ethyl cyclohexanoate, ethyl 2-hydroxy-3-methylbutyrate and ethyl 2-hydroxy-4-methylpentanoate, J. Chromatogr. A, 1137, 2006, 223-230.) NIST Spectra nist ri

1430 (Program type: Complex; Column... (show more) class: Standard polar; Column diameter: 0.32 mm; Column length: 30 m; Column type: Capillary; Description: 40C(5min) =>20C/min =>80C =>4C/min =>100C =>6C/min =>200C; CAS no: 2441067; Active phase: DB-Wax; Carrier gas: H2; Phase thickness: 0.5 um; Data type: Linear RI; Authors: Campo, E.; Cacho, J.; Ferreira, V., Multidimensional chromatographic approach applied to the identification of novel aroma compounds in wine. Identification of ethyl cyclohexanoate, ethyl 2-hydroxy-3-methylbutyrate and ethyl 2-hydroxy-4-methylpentanoate, J. Chromatogr. A, 1137, 2006, 223-230.) NIST Spectra nist ri

1411 (Program type: Complex; Column... (show more) class: Standard polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; Description: 35C(0.7min) =>20C/min =>70C =>4C/min=> 240C; CAS no: 2441067; Active phase: DB-Wax; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Ferrari, G.; Lablanquie, O.; Cantagrel, R.; Ledauphin, J.; Payot, T.; Fournier, N.; Guichard, E., Determination of key odorant compounds in freshly distilled cognac using GC-O, GC-MS, and sensory evaluation, J. Agric. Food Chem., 52, 2004, 5670-5676.) NIST Spectra nist ri

1422 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 1.8 K/min; Start T: 35 C; End T: 220 C; End time: 10 min; Start time: 10 min; CAS no: 2441067; Active phase: ZB-Wax; Carrier gas: He; Phase thickness: 0.15 um; Data type: Linear RI; Authors: Ledauphin, J.; Saint-Clair, J.-F.; Lablanquie, O.; Guichard, H.; Founier, N.; Guichard, E.; Barillier, D., Identification of trace volatile compounds in freshly distilled calvados and cognac using preparative separations coupled with gas chromatography-mass spectrometry, J. Agric. Food Chem., 52, 2004, 5124-5134.) NIST Spectra nist ri

1427.3 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 30 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 35 C; End T: 220 C; Start time: 0.5 min; CAS no: 2441067; Active phase: DB-Wax; Carrier gas: H2; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Pet'ka, J.; Mocak, J.; Farkas, P.; Balla, B.; Kovac, M., Classification of Slovak varietal white wines by volatile compounds, J. Sci. Food Agric., 81, 2001, 1533-1539.) NIST Spectra nist ri

1421 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 40 C; End T: 200 C; Start time: 10 min; CAS no: 2441067; Active phase: DB-Wax; Carrier gas: He; Data type: Linear RI; Authors: Umano, K.; Hagi, Y.; Nakahara, K.; Shoji, A.; Shibamoto, T., Volatile constituents of green and ripened pineapple (Aanas comosus [L.] Merr.), J. Agric. Food Chem., 40(4), 1992, 599-603.) NIST Spectra nist ri

Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module, version: 14.00

Density:	1.0±0.1 g/cm³
Boiling Point:	181.6±8.0 °C at 760 mmHg
Vapour Pressure:	0.2±0.7 mmHg at 25°C
Enthalpy of Vaporization:	48.6±6.0 kJ/mol
Flash Point:	65.6±6.9 °C
Index of Refraction:	1.430
Molar Refractivity:	37.7±0.3 cm³
#H bond acceptors:	3
#H bond donors:	1
#Freely Rotating Bonds:	4
#Rule of 5 Violations:	0

ACD/LogP:	0.69
ACD/LogD (pH 5.5):	1.08
ACD/BCF (pH 5.5):	3.88
ACD/KOC (pH 5.5):	91.89
ACD/LogD (pH 7.4):	1.08
ACD/BCF (pH 7.4):	3.88
ACD/KOC (pH 7.4):	91.88
Polar Surface Area:	47 Å²
Polarizability:	14.9±0.5 10^-24cm³
Surface Tension:	32.0±3.0 dyne/cm
Molar Volume:	145.8±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) =  0.73

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  195.20  (Adapted Stein & Brown method)
    Melting Pt (deg C):  -15.52  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.0984  (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  6.122e+004
       log Kow used: 0.73 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  1.0796e+005 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   8.49E-005  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  3.092E-007 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  0.73  (KowWin est)
  Log Kaw used:  -2.460  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  3.190
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   1.0109
   Biowin2 (Non-Linear Model)     :   0.9978
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.1763  (weeks       )
   Biowin4 (Primary Survey Model) :   3.9952  (days        )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.7314
   Biowin6 (MITI Non-Linear Model):   0.8853
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.5963
 Ready Biodegradability Prediction:   YES

Hydrocarbon Biodegradation (BioHCwin v1.01):
    Structure incompatible with current estimation method!

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  11.7 Pa (0.0881 mm Hg)
  Log Koa (Koawin est  ): 3.190
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  2.55E-007 
       Octanol/air (Koa) model:  3.8E-010 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  9.22E-006 
       Mackay model           :  2.04E-005 
       Octanol/air (Koa) model:  3.04E-008 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   7.1115 E-12 cm3/molecule-sec
      Half-Life =     1.504 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    18.049 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 1.48E-005 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  10
      Log Koc:  1.000 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
  Total Kb for pH > 8 at 25 deg C :  3.249E-005  L/mol-sec
  Kb Half-Life at pH 8:     675.915  years  
  Kb Half-Life at pH 7:    6759.149  years  

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 0.500 (BCF = 3.162)
       log Kow used: 0.73 (estimated)

 Volatilization from Water:
    Henry LC:  8.49E-005 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      9.572  hours
    Half-Life from Model Lake :      205.8  hours   (8.575 days)

 Removal In Wastewater Treatment:
    Total removal:               6.03  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.71  percent
    Total to Air:                4.23  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       7.14            36.1         1000       
   Water     46.2            360          1000       
   Soil      46.5            720          1000       
   Sediment  0.0889          3.24e+003    0          
     Persistence Time: 257 hr

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More details:

Retention Index (Kovats):

Retention Index (Normal Alkane):

Retention Index (Linear):

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