ChemSpider 2D Image | 2-Butyl isothiocyanate | C5H9NS

2-Butyl isothiocyanate

  • Molecular FormulaC5H9NS
  • Average mass115.197 Da
  • Monoisotopic mass115.045570 Da
  • ChemSpider ID70527

More details:

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

224-609-8 [EINECS]
2-Butyl isothiocyanate
2-Isothiocyanatobutan [German] [ACD/IUPAC Name]
2-Isothiocyanatobutane [ACD/IUPAC Name]
2-Isothiocyanatobutane [French] [ACD/IUPAC Name]
4426-79-3 [RN]
Butane, 2-isothiocyanato- [ACD/Index Name]
SCNY2&1 [WLN]
sec-Butyl Isothiocyanate [ACD/IUPAC Name]
[4426-79-3] [RN]
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Validated by Experts, Validated by Users, Non-Validated, Removed by Users

126JI237AW [DBID]
UNII:126JI237AW [DBID]
  • Experimental Physico-chemical Properties
  • Gas Chromatography

    • Retention Index (Kovats):

      913 (Program type: Isothermal; Col... (show more) umn class: Semi-standard non-polar; Column length: 1.8 m; Column type: Packed; Start T: 120 C; CAS no: 4426793; Active phase: UCW-98; Carrier gas: N2; Substrate: Chromosorb WAW DNCS; Data type: Kovats RI; Authors: Rajniakova, O.; Floch, L., Study of the properties of ethyl isothiocyanatocarboxylates by means of gas chromatography and mass spectroscopy, Chem. Pap., 47(2), 1993, 106-108.) NIST Spectra nist ri

    • Retention Index (Normal Alkane):

      904 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.20 mm; Column length: 50 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 60 C; End T: 250 C; End time: 20 min; CAS no: 4426793; Active phase: HP-1; Carrier gas: Helium; Phase thickness: 0.33 um; Data type: Normal alkane RI; Authors: Breme, K.; Langle, S.; Fernandez, X.; Meierhenrich, U.J.; Brevard, H.; Joulain, D., Character impact odorants from Brassicaceae by aroma extracts dilution analysis (AEDA): Brassica cretica and Brassica insularis, Flavour Fragr. J., 24, 2008, 88-93.) NIST Spectra nist ri
      925 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 40 C; End T: 220 C; Start time: 1 min; CAS no: 4426793; Active phase: CP Sil 5 CB; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Rohloff, J.; Bones, A.M., Volatile profiling of Arabidopsis thaliana - Putative olfactory compounds in plant communication, Phytochemistry, 66, 2005, 1941-1955.) NIST Spectra nist ri
      919 (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: 60 C; End T: 240 C; CAS no: 4426793; Active phase: DB-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Miyazawa, M.; Nishiguchi, T.; Yamafuji, C., Volatile components of the leaves of Brassica rapa L. var. perviridis Bailey, Flavour Fragr. J., 20, 2005, 158-160.) NIST Spectra nist ri
      1287 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.20 mm; Column length: 50 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 60 C; End T: 220 C; End time: 20 min; CAS no: 4426793; Active phase: HP-20M; Carrier gas: Helium; Phase thickness: 0.20 um; Data type: Normal alkane RI; Authors: Breme, K.; Langle, S.; Fernandez, X.; Meierhenrich, U.J.; Brevard, H.; Joulain, D., Character impact odorants from Brassicaceae by aroma extracts dilution analysis (AEDA): Brassica cretica and Brassica insularis, Flavour Fragr. J., 24, 2008, 88-93.) NIST Spectra nist ri

    • Retention Index (Linear):

      920 (Program type: Complex; Column... (show more) class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 25 m; Column type: Capillary; Description: 60C=>3C/min => 106C =>6C/min =>280C; CAS no: 4426793; Active phase: DB-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Afsharypuor, S.; Jeiran, K.; Jazy, A.A., First investigation of the flavour profiles of the leaf, ripe fruit and root of Capparis spinosa var. mucronifolia from Iran, Pharm. Acta Helv., 72, 1998, 307-309.) NIST Spectra nist ri

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

Density: 0.9±0.1 g/cm3
Boiling Point: 159.5±0.0 °C at 760 mmHg
Vapour Pressure: 3.2±0.2 mmHg at 25°C
Enthalpy of Vaporization: 38.0±3.0 kJ/mol
Flash Point: 44.2±26.5 °C
Index of Refraction: 1.485
Molar Refractivity: 35.6±0.5 cm3
#H bond acceptors: 1
#H bond donors: 0
#Freely Rotating Bonds: 2
#Rule of 5 Violations: 0
ACD/LogP: 2.35
ACD/LogD (pH 5.5): 2.64
ACD/BCF (pH 5.5): 59.86
ACD/KOC (pH 5.5): 651.18
ACD/LogD (pH 7.4): 2.64
ACD/BCF (pH 7.4): 59.86
ACD/KOC (pH 7.4): 651.18
Polar Surface Area: 44 Å2
Polarizability: 14.1±0.5 10-24cm3
Surface Tension: 26.2±7.0 dyne/cm
Molar Volume: 124.2±7.0 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) =  2.70
    Log Kow (Exper. database match) =  2.81
       Exper. Ref:  Pomona (1987)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  146.43  (Adapted Stein & Brown method)
    Melting Pt (deg C):  -37.56  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  4.73  (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  416
       log Kow used: 2.81 (expkow database)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  940.24 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   7.27E-003  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  1.723E-003 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  2.81  (exp database)
  Log Kaw used:  -0.527  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  3.337
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.6927
   Biowin2 (Non-Linear Model)     :   0.7979
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.9446  (weeks       )
   Biowin4 (Primary Survey Model) :   3.6815  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.3690
   Biowin6 (MITI Non-Linear Model):   0.3938
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.5371
 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):  577 Pa (4.33 mm Hg)
  Log Koa (Koawin est  ): 3.337
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  5.2E-009 
       Octanol/air (Koa) model:  5.33E-010 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  1.88E-007 
       Mackay model           :  4.16E-007 
       Octanol/air (Koa) model:  4.27E-008 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   3.8696 E-12 cm3/molecule-sec
      Half-Life =     2.764 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    33.169 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 3.02E-007 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  19.16
      Log Koc:  1.282 

 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 = 1.464 (BCF = 29.09)
       log Kow used: 2.81 (expkow database)

 Volatilization from Water:
    Henry LC:  0.00727 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      1.182  hours
    Half-Life from Model Lake :      102.9  hours   (4.287 days)

 Removal In Wastewater Treatment:
    Total removal:              74.53  percent
    Total biodegradation:        0.05  percent
    Total sludge adsorption:     2.40  percent
    Total to Air:               72.09  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       22.8            66.3         1000       
   Water     38.8            360          1000       
   Soil      38              720          1000       
   Sediment  0.458           3.24e+003    0          
     Persistence Time: 162 hr

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