ChemSpider 2D Image | Pentasilane | H12Si5

Pentasilane

  • Molecular FormulaH12Si5
  • Average mass152.523 Da
  • Monoisotopic mass151.978531 Da
  • ChemSpider ID123329

More details:

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

Pentasilan [German] [ACD/IUPAC Name]
Pentasilane [ACD/Index Name] [ACD/IUPAC Name]
Pentasilane [French] [ACD/IUPAC Name]
14868-53-2 [RN]
PENTASILANE (7CI,9CI)

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

Density:
Boiling Point:
Vapour Pressure:
Enthalpy of Vaporization:
Flash Point:
Index of Refraction:
Molar Refractivity:
#H bond acceptors: 0
#H bond donors: 0
#Freely Rotating Bonds: 4
#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) =  1.73

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  409.25  (Adapted Stein & Brown method)
    Melting Pt (deg C):  145.63  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  2.96E-007  (Modified Grain method)
    Subcooled liquid VP: 4.95E-006 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):  2459
       log Kow used: 1.73 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  3.2178e-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]:  2.416E-011 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)         :   0.6749
   Biowin2 (Non-Linear Model)     :   0.6991
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.8621  (weeks       )
   Biowin4 (Primary Survey Model) :   3.6277  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.2584
   Biowin6 (MITI Non-Linear Model):   0.1327
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.8361
 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):  0.00066 Pa (4.95E-006 mm Hg)
  Log Koa (): not available
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.00455 
       Octanol/air (Koa) model:  not available
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.141 
       Mackay model           :  0.267 
       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): 0.204 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  80.77
      Log Koc:  1.907 

 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 = 0.633 (BCF = 4.294)
       log Kow used: 1.73 (estimated)

 Volatilization from Water:
    Henry LC:  2.42E-011 atm-m3/mole  (calculated from VP/WS)
    Half-Life from Model River: 2.993E+007  hours   (1.247E+006 days)
    Half-Life from Model Lake : 3.265E+008  hours   (1.361E+007 days)

 Removal In Wastewater Treatment:
    Total removal:               2.06  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.97  percent
    Total to Air:                0.00  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       0.00058         1e+005       1000       
   Water     26.1            360          1000       
   Soil      73.8            720          1000       
   Sediment  0.0718          3.24e+003    0          
     Persistence Time: 678 hr

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