Trimethyl phosphate C₃H₉O₄P structure

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) = -0.60
 Log Kow (Exper. database match) = -0.65
 Exper. Ref: Hansch,C et al. (1995)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 174.19 (Adapted Stein & Brown method)
 Melting Pt (deg C): -30.61 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 0.415 (Mean VP of Antoine & Grain methods)
 MP (exp database): -46 deg C
 BP (exp database): 197.2 deg C
 VP (exp database): 8.50E-01 mm Hg at 25 deg C

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
 Water Solubility at 25 deg C (mg/L): 3.004e+005
 log Kow used: -0.65 (expkow database)
 no-melting pt equation used
 Water Sol (Exper. database match) = 5e+005 mg/L (25 deg C)
 Exper. Ref: YALKOWSKY,SH & DANNENFELSER,RM (1992)

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 1e+006 mg/L
 Wat Sol (Exper. database match) = 500000.00
 Exper. Ref: YALKOWSKY,SH & DANNENFELSER,RM (1992)

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 2.49E-007 atm-m3/mole
 Group Method: Incomplete
 Exper Database: 7.20E-09 atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]: 2.546E-007 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: -0.65 (exp database)
 Log Kaw used: -6.531 (exp database)
 Log Koa (KOAWIN v1.10 estimate): 5.881
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : 0.9948
 Biowin2 (Non-Linear Model) : 1.0000
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 3.0433 (weeks )
 Biowin4 (Primary Survey Model) : 4.1110 (days )
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : 0.4514
 Biowin6 (MITI Non-Linear Model): 0.4184
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): 1.1244
 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): 113 Pa (0.85 mm Hg)
 Log Koa (Koawin est ): 5.881
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 2.65E-008 
 Octanol/air (Koa) model: 1.87E-007 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 9.56E-007 
 Mackay model : 2.12E-006 
 Octanol/air (Koa) model: 1.49E-005 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 8.3640 E-12 cm3/molecule-sec
 Half-Life = 1.279 Days (12-hr day; 1.5E6 OH/cm3)
 Half-Life = 15.346 Hrs
 Ozone Reaction:
 No Ozone Reaction Estimation
 Fraction sorbed to airborne particulates (phi): 1.54E-006 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 7.644
 Log Koc: 0.883 

 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: -0.65 (expkow database)

 Volatilization from Water:
 Henry LC: 7.2E-009 atm-m3/mole (Henry experimental database)
 Half-Life from Model River: 9.624E+004 hours (4010 days)
 Half-Life from Model Lake : 1.05E+006 hours (4.375E+004 days)

 Removal In Wastewater Treatment:
 Total removal: 1.85 percent
 Total biodegradation: 0.09 percent
 Total sludge adsorption: 1.76 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 0.162 34.8 1000 
 Water 39.3 360 1000 
 Soil 60.5 720 1000 
 Sediment 0.072 3.24e+003 0 
 Persistence Time: 562 hr