ChemSpider 2D Image | 3-Methylene-1-pentyne | C6H8

3-Methylene-1-pentyne

  • Molecular FormulaC6H8
  • Average mass80.128 Da
  • Monoisotopic mass80.062599 Da
  • ChemSpider ID66702

More details:

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

1574-34-1 [RN]
1-Buten-3-yne, 2-ethyl-
1-Pentyne, 3-methylene- [ACD/Index Name]
216-400-5 [EINECS]
3-Methylen-1-pentin [German] [ACD/IUPAC Name]
3-Methylene-1-pentyne [ACD/IUPAC Name]
3-Méthylène-1-pentyne [French] [ACD/IUPAC Name]
3-methylenepent-1-yne
3-METHYLIDENEPENT-1-YNE

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

Density: 0.8±0.1 g/cm3
Boiling Point: 63.8±9.0 °C at 760 mmHg
Vapour Pressure: 181.1±0.1 mmHg at 25°C
Enthalpy of Vaporization: 29.3±0.8 kJ/mol
Flash Point: -22.8±12.9 °C
Index of Refraction: 1.426
Molar Refractivity: 27.2±0.3 cm3
#H bond acceptors: 0
#H bond donors: 0
#Freely Rotating Bonds: 2
#Rule of 5 Violations: 0
ACD/LogP: 2.51
ACD/LogD (pH 5.5): 2.22
ACD/BCF (pH 5.5): 28.82
ACD/KOC (pH 5.5): 385.85
ACD/LogD (pH 7.4): 2.22
ACD/BCF (pH 7.4): 28.82
ACD/KOC (pH 7.4): 385.85
Polar Surface Area: 0 Å2
Polarizability: 10.8±0.5 10-24cm3
Surface Tension: 24.0±3.0 dyne/cm
Molar Volume: 106.2±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) =  2.44

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  71.62  (Adapted Stein & Brown method)
    Melting Pt (deg C):  -78.19  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  134  (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  315.5
       log Kow used: 2.44 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  768.04 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   4.02E-002  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  4.478E-002 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  2.44  (KowWin est)
  Log Kaw used:  0.216  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  2.224
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7094
   Biowin2 (Non-Linear Model)     :   0.8666
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.0221  (weeks       )
   Biowin4 (Primary Survey Model) :   3.7321  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.5360
   Biowin6 (MITI Non-Linear Model):   0.6722
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.6355
 Ready Biodegradability Prediction:   YES

 Hydrocarbon Biodegradation (BioHCwin v1.01):
     LOG BioHC Half-Life (days) :   0.4460
     BioHC Half-Life (days)     :   2.7926

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  1.75E+004 Pa (131 mm Hg)
  Log Koa (Koawin est  ): 2.224
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  1.72E-010 
       Octanol/air (Koa) model:  4.11E-011 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  6.2E-009 
       Mackay model           :  1.37E-008 
       Octanol/air (Koa) model:  3.29E-009 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  73.8713 E-12 cm3/molecule-sec
      Half-Life =     0.145 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     1.738 Hrs
   Ozone Reaction:
      OVERALL Ozone Rate Constant =     1.140500 E-17 cm3/molecule-sec
      Half-Life =     1.005 Days (at 7E11 mol/cm3)
      Half-Life =     24.116 Hrs
   Fraction sorbed to airborne particulates (phi): 9.97E-009 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  130.8
      Log Koc:  2.117 

 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 = 1.176 (BCF = 14.99)
       log Kow used: 2.44 (estimated)

 Volatilization from Water:
    Henry LC:  0.0402 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:     0.9265  hours   (55.59 min)
    Half-Life from Model Lake :      85.17  hours   (3.549 days)

 Removal In Wastewater Treatment:
    Total removal:              94.00  percent
    Total biodegradation:        0.02  percent
    Total sludge adsorption:     1.01  percent
    Total to Air:               92.97  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       4.73            3.04         1000       
   Water     85.5            360          1000       
   Soil      9.22            720          1000       
   Sediment  0.542           3.24e+003    0          
     Persistence Time: 72.2 hr

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