2,6-Difluoropyridine C5H3F2N 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) = 1.21
 Log Kow (Exper. database match) = 1.17
 Exper. Ref: Hansch,C et al. (1995)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 102.42 (Adapted Stein & Brown method)
 Melting Pt (deg C): -34.62 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 12.5 (Mean VP of Antoine & Grain methods)
 BP (exp database): 125 deg C

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
 Water Solubility at 25 deg C (mg/L): 1.047e+004
 log Kow used: 1.17 (expkow database)
 no-melting pt equation used

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 22174 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 9.60E-006 atm-m3/mole
 Group Method: Incomplete
 Henrys LC [VP/WSol estimate using EPI values]: 1.808E-004 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: 1.17 (exp database)
 Log Kaw used: -3.406 (HenryWin est)
 Log Koa (KOAWIN v1.10 estimate): 4.576
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : -1.0818
 Biowin2 (Non-Linear Model) : 0.0000
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 1.9168 (months )
 Biowin4 (Primary Survey Model) : 3.6899 (days-weeks )
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : 0.3957
 Biowin6 (MITI Non-Linear Model): 0.0001
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): 1.1909
 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): 1.55E+003 Pa (11.6 mm Hg)
 Log Koa (Koawin est ): 4.576
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 1.94E-009 
 Octanol/air (Koa) model: 9.25E-009 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 7.01E-008 
 Mackay model : 1.55E-007 
 Octanol/air (Koa) model: 7.4E-007 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 0.5806 E-12 cm3/molecule-sec
 Half-Life = 18.424 Days (12-hr day; 1.5E6 OH/cm3)
 Ozone Reaction:
 No Ozone Reaction Estimation
 Fraction sorbed to airborne particulates (phi): 1.13E-007 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 86.58
 Log Koc: 1.937 

 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 = 0.201 (BCF = 1.588)
 log Kow used: 1.17 (expkow database)

 Volatilization from Water:
 Henry LC: 9.6E-006 atm-m3/mole (estimated by Bond SAR Method)
 Half-Life from Model River: 66.52 hours (2.772 days)
 Half-Life from Model Lake : 815.6 hours (33.98 days)

 Removal In Wastewater Treatment:
 Total removal: 2.43 percent
 Total biodegradation: 0.09 percent
 Total sludge adsorption: 1.80 percent
 Total to Air: 0.54 percent
 (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
 Mass Amount Half-Life Emissions
 (percent) (hr) (kg/hr)
 Air 4.86 442 1000 
 Water 47.7 1.44e+003 1000 
 Soil 47.4 2.88e+003 1000 
 Sediment 0.106 1.3e+004 0 
 Persistence Time: 723 hr