Hexamethyldisilazane

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

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

                        
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  2.62

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  107.63  (Adapted Stein & Brown method)
    Melting Pt (deg C):  -58.07  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  12.5  (Mean VP of Antoine & Grain methods)
    BP  (exp database):  125 deg C
    VP  (exp database):  1.38E+01 mm Hg at 25 deg C

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  392.3
       log Kow used: 2.62 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  7.8558 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   8.69E-005  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  6.767E-003 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  2.62  (KowWin est)
  Log Kaw used:  -2.449  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  5.069
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.6707
   Biowin2 (Non-Linear Model)     :   0.6719
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.8425  (weeks       )
   Biowin4 (Primary Survey Model) :   3.6149  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.2345
   Biowin6 (MITI Non-Linear Model):   0.1174
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.3587
 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):  1.84E+003 Pa (13.8 mm Hg)
  Log Koa (Koawin est  ): 5.069
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  1.63E-009 
       Octanol/air (Koa) model:  2.88E-008 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  5.89E-008 
       Mackay model           :  1.3E-007 
       Octanol/air (Koa) model:  2.3E-006 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   0.8976 E-12 cm3/molecule-sec
      Half-Life =    11.916 Days (12-hr day; 1.5E6 OH/cm3)
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 9.47E-008 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  393.3
      Log Koc:  2.595 

 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 = 1.315 (BCF = 20.67)
       log Kow used: 2.62 (estimated)

 Volatilization from Water:
    Henry LC:  8.69E-005 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      9.856  hours
    Half-Life from Model Lake :        214  hours   (8.919 days)

 Removal In Wastewater Treatment:
    Total removal:               7.63  percent
    Total biodegradation:        0.10  percent
    Total sludge adsorption:     3.28  percent
    Total to Air:                4.24  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       7.62            286          1000       
   Water     23.2            360          1000       
   Soil      69              720          1000       
   Sediment  0.197           3.24e+003    0          
     Persistence Time: 437 hr