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CAS Num: 000099-75-2
SMILES : O=C(OC)c(ccc(c1)C)c1
CHEM : Benzoic acid, 4-methyl-, methyl ester
MOL FOR: C9 H10 O2
MOL WT : 150.18
------------------------------ EPI SUMMARY (v4.00) --------------------------
Physical Property Inputs:
Water Solubility (mg/L): ------
Vapor Pressure (mm Hg) : ------
Henry LC (atm-m3/mole) : ------
Log Kow (octanol-water): ------
Boiling Point (deg C) : ------
Melting Point (deg C) : ------
Log Octanol-Water Partition Coef (SRC):
Log Kow (KOWWIN v1.67 estimate) = 2.38
Log Kow (Exper. database match) = 2.70
Exper. Ref: SOTOMATSU,T ET AL. (1993)
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
Boiling Pt (deg C): 215.56 (Adapted Stein & Brown method)
Melting Pt (deg C): 5.75 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 0.103 (Modified Grain method)
VP (Pa, 25 deg C) : 13.7 (Modified Grain method)
MP (exp database): 33.2 deg C
BP (exp database): 220 deg C
Subcooled liquid VP: 0.122 mm Hg (25 deg C, Mod-Grain method)
: 16.3 Pa (25 deg C, Mod-Grain method)
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 374.5
log Kow used: 2.70 (expkow database)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 1149.5 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Esters
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 3.83E-005 atm-m3/mole (3.88E+000 Pa-m3/mole)
Group Method: 1.94E-005 atm-m3/mole (1.97E+000 Pa-m3/mole)
For Henry LC Comparison Purposes:
User-Entered Henry LC: not entered
Henrys LC [via VP/WSol estimate using User-Entered or Estimated values]:
HLC: 5.435E-005 atm-m3/mole (5.507E+000 Pa-m3/mole)
VP: 0.103 mm Hg (source: MPBPVP)
WS: 375 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 2.70 (exp database)
Log Kaw used: -2.805 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 5.505
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.9049
Biowin2 (Non-Linear Model) : 0.9961
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.9327 (weeks )
Biowin4 (Primary Survey Model) : 3.7915 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.6838
Biowin6 (MITI Non-Linear Model): 0.8090
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.1749
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): 16.3 Pa (0.122 mm Hg)
Log Koa (Koawin est ): 5.505
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 1.84E-007
Octanol/air (Koa) model: 7.85E-008
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 6.66E-006
Mackay model : 1.48E-005
Octanol/air (Koa) model: 6.28E-006
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 1.9890 E-12 cm3/molecule-sec
Half-Life = 5.378 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 64.531 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
1.07E-005 (Junge-Pankow, Mackay avg)
6.28E-006 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 107.8 L/kg (MCI method)
Log Koc: 2.033 (MCI method)
Koc : 225.4 L/kg (Kow method)
Log Koc: 2.353 (Kow method)
Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
Total Kb for pH > 8 at 25 deg C : 2.031E-002 L/mol-sec
Kb Half-Life at pH 8: 1.081 years
Kb Half-Life at pH 7: 10.812 years
(Total Kb applies only to esters, carbmates, alkyl halides)
Bioaccumulation Estimates (BCFBAF v3.00):
Log BCF from regression-based method = 1.448 (BCF = 28.08 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -0.8791 days (HL = 0.1321 days)
Log BCF Arnot-Gobas method (upper trophic) = 1.414 (BCF = 25.95)
Log BAF Arnot-Gobas method (upper trophic) = 1.414 (BAF = 25.95)
log Kow used: 2.70 (expkow database)
Volatilization from Water:
Henry LC: 1.94E-005 atm-m3/mole (estimated by Group SAR Method)
Half-Life from Model River: 38.23 hours (1.593 days)
Half-Life from Model Lake : 519.9 hours (21.66 days)
Removal In Wastewater Treatment:
Total removal: 4.83 percent
Total biodegradation: 0.11 percent
Total sludge adsorption: 3.68 percent
Total to Air: 1.04 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 5.12 129 1000
Water 26.5 360 1000
Soil 68.3 720 1000
Sediment 0.163 3.24e+003 0
Persistence Time: 451 hr