ChemSpider 2D Image | Ethyl maltol | C7H8O3

Ethyl maltol

  • Molecular FormulaC7H8O3
  • Average mass140.137 Da
  • Monoisotopic mass140.047348 Da
  • ChemSpider ID19804

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2-Ethyl pyromeconic acid
2-Ethyl-3-hydroxy-4H-pyran-4-on [German] [ACD/IUPAC Name]
2-Ethyl-3-hydroxy-4H-pyran-4-one [ACD/IUPAC Name]
2-Éthyl-3-hydroxy-4H-pyran-4-one [French] [ACD/IUPAC Name]
2-Ethyl-3-hydroxy-4-pyrone
4H-Pyran-4-one, 2-ethyl-3-hydroxy- [ACD/Index Name]
Ethyl maltol [Wiki]
[4940-11-8]
118-71-8 [RN]
204-271-8 [EINECS]
More...

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

412929_ALDRICH [DBID]
AIDS136694 [DBID]
AIDS-136694 [DBID]
BRN 1618110 [DBID]
FEMA No. 3487 [DBID]
LS-2414 [DBID]
NSC638851 [DBID]
W348708_ALDRICH [DBID]
  • Experimental Physico-chemical Properties
  • Predicted Physico-chemical Properties
  • Miscellaneous
  • Gas Chromatography
    • Retention Index (Kovats):

      1163 (estimated with error: 89) NIST Spectra mainlib_231454, replib_3739, replib_109247
    • Retention Index (Normal Alkane):

      1180.5 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.2 mm; Column length: 50 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 50 C; End T: 270 C; Start time: 3 min; CAS no: 4940118; Active phase: DB-Petro 100; Carrier gas: He; Phase thickness: 0.5 um; Data type: Normal alkane RI; Authors: Lu, X.; Cai, J.; Kong, H.; Wu, M.; Hua, R.; Zhao, M.; Liu, J.; Xu, G., Analysis of cigarette smoke condensates by comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry. I. Acidic fraction, Anal. Chem., 75(17), 2003, 4441-4451.) NIST Spectra nist ri
      1193 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.18 mm; Column length: 10 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 40 C; End T: 295 C; Start time: 1.5 min; CAS no: 4940118; Active phase: SLB-5MS; Carrier gas: Helium; Phase thickness: 0.18 um; Data type: Normal alkane RI; Authors: Risticevic, S.; Carasek, E.; Pawliszyn, J., Headspace solid-phase microextraction-gas chromatographic-time-of-flight mass spectrometric methodology for geographical origin verification of coffee, Anal. Chim. Acta, 617, 2008, 72-84.) NIST Spectra nist ri
      1199 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.18 mm; Column length: 10 m; Column type: Capillary; CAS no: 4940118; Active phase: SLB-5MS; Carrier gas: Helium; Phase thickness: 0.18 um; Data type: Normal alkane RI; Authors: Risticevic, S.; Carasek, E.; Pawliszyn, J., Headspace solid-phase microextraction-gas chromatographic-time-of-flight mass spectrometric methodology for geographical origin verification of coffee, Anal. Chim. Acta, 617, 2008, 72-84.) NIST Spectra nist ri
      2050 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 25 m; Column type: Capillary; Heat rate: 15 K/min; Start T: 45 C; End T: 220 C; CAS no: 4940118; Active phase: HP-FFAP; Carrier gas: He; Phase thickness: 0.5 um; Data type: Normal alkane RI; Authors: Wanakhachornkrai, P.; Lertsiri, S., Analytical, nutritional, and clinical methods. Comparison of determination method for volatile compounds in Thai soy sauce, Food Chem., 83, 2003, 619-629., Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 25 m; Column type: Capillary; Heat rate: 15 K/min; Start T: 45 C; End T: 220 C; CAS no: 4940118; Active phase: HP-FFAP; Carrier gas: Helium; Phase thickness: 0.50 um; Data type: Normal alkane RI; Authors: Wanakhachornkrai, P.; Lertsiri, S., Comparison of determination method for volatile compounds in Thai soy sauce, Analytical, Nutritional and Clinical Methods, , 9999, 1-11.) NIST Spectra nist ri
      2052 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 25 m; Column type: Capillary; Heat rate: 15 K/min; Start T: 45 C; End T: 220 C; CAS no: 4940118; Active phase: HP-FFAP; Carrier gas: He; Phase thickness: 0.5 um; Data type: Normal alkane RI; Authors: Wanakhachornkrai, P.; Lertsiri, S., Analytical, nutritional, and clinical methods. Comparison of determination method for volatile compounds in Thai soy sauce, Food Chem., 83, 2003, 619-629., Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 25 m; Column type: Capillary; Heat rate: 15 K/min; Start T: 45 C; End T: 220 C; CAS no: 4940118; Active phase: HP-FFAP; Carrier gas: Helium; Phase thickness: 0.50 um; Data type: Normal alkane RI; Authors: Wanakhachornkrai, P.; Lertsiri, S., Comparison of determination method for volatile compounds in Thai soy sauce, Analytical, Nutritional and Clinical Methods, , 9999, 1-11.) NIST Spectra nist ri
      2033.9 (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: 50 C; End T: 220 C; End time: 50 min; Start time: 3 min; CAS no: 4940118; Active phase: DB-Wax; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Lu, X.; Cai, J.; Kong, H.; Wu, M.; Hua, R.; Zhao, M.; Liu, J.; Xu, G., Analysis of cigarette smoke condensates by comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry. I. Acidic fraction, Anal. Chem., 75(17), 2003, 4441-4451.) NIST Spectra nist ri

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

Density: 1.3±0.1 g/cm3
Boiling Point: 290.3±40.0 °C at 760 mmHg
Vapour Pressure: 0.0±1.4 mmHg at 25°C
Enthalpy of Vaporization: 61.5±6.0 kJ/mol
Flash Point: 124.8±20.8 °C
Index of Refraction: 1.541
Molar Refractivity: 34.9±0.3 cm3
#H bond acceptors: 3
#H bond donors: 1
#Freely Rotating Bonds: 1
#Rule of 5 Violations: 0
ACD/LogP: 0.61
ACD/LogD (pH 5.5): 0.50
ACD/BCF (pH 5.5): 1.42
ACD/KOC (pH 5.5): 44.71
ACD/LogD (pH 7.4): 0.46
ACD/BCF (pH 7.4): 1.29
ACD/KOC (pH 7.4): 40.53
Polar Surface Area: 47 Å2
Polarizability: 13.8±0.5 10-24cm3
Surface Tension: 47.0±3.0 dyne/cm
Molar Volume: 111.1±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) =  0.30
    Log Kow (Exper. database match) =  0.63
       Exper. Ref:  Ellis,BL et al. (1996)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  283.37  (Adapted Stein & Brown method)
    Melting Pt (deg C):  70.54  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.000145  (Modified Grain method)
    Subcooled liquid VP: 0.00039 mm Hg (25 deg C, Mod-Grain method)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  2.423e+004
       log Kow used: 0.63 (expkow database)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  1476 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
    Class(es) found:
       Vinyl/Allyl Ketones
       Vinyl/Allyl Ethers
       Vinyl/Allyl Alcohols

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   8.69E-006  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  1.103E-009 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  0.63  (exp database)
  Log Kaw used:  -3.449  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  4.079
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.4990
   Biowin2 (Non-Linear Model)     :   0.1486
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.0183  (weeks       )
   Biowin4 (Primary Survey Model) :   3.7430  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.6378
   Biowin6 (MITI Non-Linear Model):   0.6718
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.1191
 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):  0.052 Pa (0.00039 mm Hg)
  Log Koa (Koawin est  ): 4.079
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  5.77E-005 
       Octanol/air (Koa) model:  2.94E-009 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.00208 
       Mackay model           :  0.00459 
       Octanol/air (Koa) model:  2.36E-007 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  51.0213 E-12 cm3/molecule-sec
      Half-Life =     0.210 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     2.516 Hrs
   Ozone Reaction:
      OVERALL Ozone Rate Constant =     1.312500 E-17 cm3/molecule-sec
      Half-Life =     0.873 Days (at 7E11 mol/cm3)
      Half-Life =     20.955 Hrs
   Fraction sorbed to airborne particulates (phi): 0.00334 (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]:
    Rate constants can NOT be estimated for this structure!

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 0.500 (BCF = 3.162)
       log Kow used: 0.63 (expkow database)

 Volatilization from Water:
    Henry LC:  8.69E-006 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      80.97  hours   (3.374 days)
    Half-Life from Model Lake :      982.5  hours   (40.94 days)

 Removal In Wastewater Treatment:
    Total removal:               2.34  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.76  percent
    Total to Air:                0.49  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       0.654           4.06         1000       
   Water     46.7            360          1000       
   Soil      52.6            720          1000       
   Sediment  0.0889          3.24e+003    0          
     Persistence Time: 327 hr




                    

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