ChemSpider 2D Image | MFCD00039874 | C18H40Si

MFCD00039874

  • Molecular FormulaC18H40Si
  • Average mass284.596 Da
  • Monoisotopic mass284.289917 Da
  • ChemSpider ID79148

More details:






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

18623-11-5 [RN]
242-453-9 [EINECS]
MFCD00039874
Octadecylsilan [German] [ACD/IUPAC Name]
Octadecylsilane [ACD/IUPAC Name]
Octadécylsilane [French] [ACD/IUPAC Name]
Silane, octadecyl- [ACD/Index Name]
[18623-11-5] [RN]
18457-04-0 [RN]
95%
More...

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

Density:
Boiling Point: 346.1±11.0 °C at 760 mmHg
Vapour Pressure: 0.0±0.7 mmHg at 25°C
Enthalpy of Vaporization: 56.7±3.0 kJ/mol
Flash Point: 163.1±19.3 °C
Index of Refraction:
Molar Refractivity:
#H bond acceptors: 0
#H bond donors: 0
#Freely Rotating Bonds: 16
#Rule of 5 Violations:
ACD/LogP:
ACD/LogD (pH 5.5):
ACD/BCF (pH 5.5):
ACD/KOC (pH 5.5):
ACD/LogD (pH 7.4):
ACD/BCF (pH 7.4):
ACD/KOC (pH 7.4):
Polar Surface Area: 0 Å2
Polarizability:
Surface Tension:
Molar Volume:

Predicted data is generated using the US Environmental Protection Agency�s EPISuite™

                        
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  18.03

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  11.24  (Adapted Stein & Brown method)
    Melting Pt (deg C):  -15.71  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  1.25E+003  (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  6.026e-012
       log Kow used: 18.03 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  2.8461e-007 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   Incomplete
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  4.723E+013 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Can Not Estimate (can not calculate HenryLC)

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :  -2.6987
   Biowin2 (Non-Linear Model)     :   0.0000
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):  -1.2479  (recalcitrant)
   Biowin4 (Primary Survey Model) :   0.6752  (recalcitrant)
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   1.0825
   Biowin6 (MITI Non-Linear Model):   0.8163
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -5.1801
 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):  1.67E+005 Pa (1.25E+003 mm Hg)
  Log Koa (): not available
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  1.8E-011 
       Octanol/air (Koa) model:  not available
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  6.5E-010 
       Mackay model           :  1.44E-009 
       Octanol/air (Koa) model:  not available

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   0.0000 E-12 cm3/molecule-sec
      Half-Life =   -------
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 1.05E-009 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  4.257E+005
      Log Koc:  5.629 

 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: 18.03 (estimated)

 Volatilization from Water:
    Henry LC:  4.72E+013 atm-m3/mole  (calculated from VP/WS)
    Half-Life from Model River:      1.722  hours
    Half-Life from Model Lake :      160.2  hours   (6.677 days)

 Removal In Wastewater Treatment (recommended maximum 95%):
    Total removal:             100.00  percent
    Total biodegradation:        0.18  percent
    Total sludge adsorption:    59.92  percent
    Total to Air:               39.90  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       1.02            1e+005       1000       
   Water     1.22            4.32e+003    1000       
   Soil      0.18            8.64e+003    1000       
   Sediment  97.6            3.89e+004    0          
     Persistence Time: 6.53e+003 hr




                    

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