O,O,O-Triethyl phosphorothioate C6H15O3PS 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) = 2.64

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 227.76 (Adapted Stein & Brown method)
 Melting Pt (deg C): -58.07 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 0.0878 (Mean VP of Antoine & Grain methods)
 BP (exp database): 100 @ 16 mm Hg deg C

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
 Water Solubility at 25 deg C (mg/L): 250.1
 log Kow used: 2.64 (estimated)
 no-melting pt equation used

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 502.24 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
 Class(es) found:
 Esters
 Esters (phosphate)
 Nearest analog analysis: pesticides

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 2.70E-004 atm-m3/mole
 Group Method: Incomplete
 Henrys LC [VP/WSol estimate using EPI values]: 9.156E-005 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: 2.64 (KowWin est)
 Log Kaw used: -1.957 (HenryWin est)
 Log Koa (KOAWIN v1.10 estimate): 4.597
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : 0.9671
 Biowin2 (Non-Linear Model) : 1.0000
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 2.9149 (weeks )
 Biowin4 (Primary Survey Model) : 4.0271 (days )
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : 0.4266
 Biowin6 (MITI Non-Linear Model): 0.3275
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): 1.2023
 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): 11 Pa (0.0826 mm Hg)
 Log Koa (Koawin est ): 4.597
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 2.72E-007 
 Octanol/air (Koa) model: 9.71E-009 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 9.84E-006 
 Mackay model : 2.18E-005 
 Octanol/air (Koa) model: 7.76E-007 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 110.9428 E-12 cm3/molecule-sec
 Half-Life = 0.096 Days (12-hr day; 1.5E6 OH/cm3)
 Half-Life = 1.157 Hrs
 Ozone Reaction:
 No Ozone Reaction Estimation
 Fraction sorbed to airborne particulates (phi): 1.58E-005 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 130.5
 Log Koc: 2.115 

 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 = 1.330 (BCF = 21.4)
 log Kow used: 2.64 (estimated)

 Volatilization from Water:
 Henry LC: 0.00027 atm-m3/mole (estimated by Bond SAR Method)
 Half-Life from Model River: 4.49 hours
 Half-Life from Model Lake : 167 hours (6.96 days)

 Removal In Wastewater Treatment:
 Total removal: 14.33 percent
 Total biodegradation: 0.10 percent
 Total sludge adsorption: 3.20 percent
 Total to Air: 11.03 percent
 (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
 Mass Amount Half-Life Emissions
 (percent) (hr) (kg/hr)
 Air 0.471 2.31 1000 
 Water 23.6 360 1000 
 Soil 75.7 720 1000 
 Sediment 0.207 3.24e+003 0 
 Persistence Time: 348 hr