(4-Chloro-2-hydroxyphenoxy)acetic acid C8H7ClO4 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) = 1.24

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 346.12 (Adapted Stein & Brown method)
 Melting Pt (deg C): 124.79 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 4.49E-006 (Modified Grain method)
 Subcooled liquid VP: 4.43E-005 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): 9263
 log Kow used: 1.24 (estimated)
 no-melting pt equation used

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 87120 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
 Class(es) found:
 Phenols-acid

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 1.29E-012 atm-m3/mole
 Group Method: 7.92E-012 atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]: 1.292E-010 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: 1.24 (KowWin est)
 Log Kaw used: -10.278 (HenryWin est)
 Log Koa (KOAWIN v1.10 estimate): 11.518
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : 0.7891
 Biowin2 (Non-Linear Model) : 0.8717
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 2.9077 (weeks )
 Biowin4 (Primary Survey Model) : 3.8925 (days )
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : 0.6303
 Biowin6 (MITI Non-Linear Model): 0.5482
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): 0.6190
 Ready Biodegradability Prediction: YES

Hydrocarbon Biodegradation (BioHCwin v1.01):
 Structure incompatible with current estimation method!

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
 Vapor pressure (liquid/subcooled): 0.00591 Pa (4.43E-005 mm Hg)
 Log Koa (Koawin est ): 11.518
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 0.000508 
 Octanol/air (Koa) model: 0.0809 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 0.018 
 Mackay model : 0.039 
 Octanol/air (Koa) model: 0.866 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 25.2127 E-12 cm3/molecule-sec
 Half-Life = 0.424 Days (12-hr day; 1.5E6 OH/cm3)
 Half-Life = 5.091 Hrs
 Ozone Reaction:
 No Ozone Reaction Estimation
 Reaction With Nitrate Radicals May Be Important!
 Fraction sorbed to airborne particulates (phi): 0.0285 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 29.41
 Log Koc: 1.469 

 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 = 0.500 (BCF = 3.162)
 log Kow used: 1.24 (estimated)

 Volatilization from Water:
 Henry LC: 1.29E-012 atm-m3/mole (estimated by Bond SAR Method)
 Half-Life from Model River: 6.46E+008 hours (2.692E+007 days)
 Half-Life from Model Lake : 7.047E+009 hours (2.936E+008 days)

 Removal In Wastewater Treatment:
 Total removal: 1.92 percent
 Total biodegradation: 0.09 percent
 Total sludge adsorption: 1.82 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 2.87e-005 10.2 1000 
 Water 32.3 360 1000 
 Soil 67.7 720 1000 
 Sediment 0.0688 3.24e+003 0 
 Persistence Time: 627 hr