Secobarbital C12H18N2O3 structure – Flashcards

Predicted data is generated using the ACD/Labs Percepta Platform – PhysChem Module

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

 
 Log Octanol-Water Partition Coef (SRC):
 Log Kow (KOWWIN v1.67 estimate) = 2.36
 Log Kow (Exper. database match) = 1.97
 Exper. Ref: Hansch,C et al. (1995)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 546.40 (Adapted Stein & Brown method)
 Melting Pt (deg C): 234.27 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 3.36E-010 (Modified Grain method)
 MP (exp database): 100 deg C
 Subcooled liquid VP: 1.8E-009 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): 570.1
 log Kow used: 1.97 (expkow database)
 no-melting pt equation used

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 213.53 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 8.35E-013 atm-m3/mole
 Group Method: Incomplete
 Henrys LC [VP/WSol estimate using EPI values]: 1.848E-013 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: 1.97 (exp database)
 Log Kaw used: -10.467 (HenryWin est)
 Log Koa (KOAWIN v1.10 estimate): 12.437
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : 0.4502
 Biowin2 (Non-Linear Model) : 0.1093
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 2.4605 (weeks-months)
 Biowin4 (Primary Survey Model) : 3.3505 (days-weeks )
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : 0.1878
 Biowin6 (MITI Non-Linear Model): 0.0665
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): 0.0343
 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): 2.4E-007 Pa (1.8E-009 mm Hg)
 Log Koa (Koawin est ): 12.437
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 12.5 
 Octanol/air (Koa) model: 0.671 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 0.998 
 Mackay model : 0.999 
 Octanol/air (Koa) model: 0.982 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 44.1452 E-12 cm3/molecule-sec
 Half-Life = 0.242 Days (12-hr day; 1.5E6 OH/cm3)
 Half-Life = 2.907 Hrs
 Ozone Reaction:
 OVERALL Ozone Rate Constant = 1.200000 E-17 cm3/molecule-sec
 Half-Life = 0.955 Days (at 7E11 mol/cm3)
 Half-Life = 22.920 Hrs
 Fraction sorbed to airborne particulates (phi): 0.998 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 211
 Log Koc: 2.324 

 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 = 0.817 (BCF = 6.56)
 log Kow used: 1.97 (expkow database)

 Volatilization from Water:
 Henry LC: 8.35E-013 atm-m3/mole (estimated by Bond SAR Method)
 Half-Life from Model River: 1.082E+009 hours (4.51E+007 days)
 Half-Life from Model Lake : 1.181E+010 hours (4.92E+008 days)

 Removal In Wastewater Treatment:
 Total removal: 2.22 percent
 Total biodegradation: 0.10 percent
 Total sludge adsorption: 2.12 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 0.000193 4.64 1000 
 Water 23.6 900 1000 
 Soil 76.3 1.8e+003 1000 
 Sediment 0.0879 8.1e+003 0 
 Persistence Time: 1.4e+003 hr