2,7-di(tert-butyl)pyrene C24H26 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) = 8.75

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 441.49 (Adapted Stein & Brown method)
 Melting Pt (deg C): 169.86 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 2.55E-008 (Modified Grain method)
 Subcooled liquid VP: 7.99E-007 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): 2.63e-005
 log Kow used: 8.75 (estimated)
 no-melting pt equation used

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 4.5492e-005 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 5.53E-005 atm-m3/mole
 Group Method: 1.41E-005 atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]: 4.012E-004 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: 8.75 (KowWin est)
 Log Kaw used: -2.646 (HenryWin est)
 Log Koa (KOAWIN v1.10 estimate): 11.396
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : -0.4273
 Biowin2 (Non-Linear Model) : 0.0000
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 1.2806 (recalcitrant)
 Biowin4 (Primary Survey Model) : 2.3849 (weeks-months)
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : -0.0200
 Biowin6 (MITI Non-Linear Model): 0.0092
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): -1.0732
 Ready Biodegradability Prediction: NO

 Hydrocarbon Biodegradation (BioHCwin v1.01):
 LOG BioHC Half-Life (days) : 3.1362
 BioHC Half-Life (days) : 1368.4319

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
 Vapor pressure (liquid/subcooled): 0.000107 Pa (7.99E-007 mm Hg)
 Log Koa (Koawin est ): 11.396
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 0.0282 
 Octanol/air (Koa) model: 0.0611 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 0.504 
 Mackay model : 0.693 
 Octanol/air (Koa) model: 0.83 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 133.1545 E-12 cm3/molecule-sec
 Half-Life = 0.080 Days (12-hr day; 1.5E6 OH/cm3)
 Half-Life = 0.964 Hrs
 Ozone Reaction:
 No Ozone Reaction Estimation
 Fraction sorbed to airborne particulates (phi): 0.598 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 3.535E+006
 Log Koc: 6.548 

 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 = 2.410 (BCF = 256.9)
 log Kow used: 8.75 (estimated)

 Volatilization from Water:
 Henry LC: 1.41E-005 atm-m3/mole (estimated by Group SAR Method)
 Half-Life from Model River: 75.44 hours (3.144 days)
 Half-Life from Model Lake : 971.7 hours (40.49 days)

 Removal In Wastewater Treatment:
 Total removal: 94.03 percent
 Total biodegradation: 0.78 percent
 Total sludge adsorption: 93.25 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 0.00798 1.93 1000 
 Water 0.743 4.32e+003 1000 
 Soil 40 8.64e+003 1000 
 Sediment 59.3 3.89e+004 0 
 Persistence Time: 1.08e+004 hr