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CAS Num: 000119-36-8
SMILES : O=C(OC)c(c(O)ccc1)c1
CHEM : Benzoic acid, 2-hydroxy-, methyl ester
MOL FOR: C8 H8 O3
MOL WT : 152.15
------------------------------ 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) = 2.60
Log Kow (Exper. database match) = 2.55
Exper. Ref: SANGSTER (1994)
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
Boiling Pt (deg C): 252.18 (Adapted Stein & Brown method)
Melting Pt (deg C): 51.47 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 0.0534 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 7.12 (Mean VP of Antoine & Grain methods)
MP (exp database): -8 deg C
BP (exp database): 222.9 deg C
VP (exp database): 3.43E-02 mm Hg (4.57E+000 Pa) at 25 deg C
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 1875
log Kow used: 2.55 (expkow database)
no-melting pt equation used
Water Sol (Exper. database match) = 700 mg/L (30 deg C)
Exper. Ref: YALKOWSKY,SH & DANNENFELSER,RM (1992)
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 4250.6 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Esters
Phenols
Salicylates
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 4.55E-006 atm-m3/mole (4.61E-001 Pa-m3/mole)
Group Method: 2.23E-009 atm-m3/mole (2.26E-004 Pa-m3/mole)
Exper Database: 9.81E-05 atm-m3/mole (9.94E+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: 5.702E-006 atm-m3/mole (5.777E-001 Pa-m3/mole)
VP: 0.0534 mm Hg (source: MPBPVP)
WS: 1.88E+003 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 2.55 (exp database)
Log Kaw used: -2.397 (exp database)
Log Koa (KOAWIN v1.10 estimate): 4.947
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.9651
Biowin2 (Non-Linear Model) : 0.9971
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.0595 (weeks )
Biowin4 (Primary Survey Model) : 3.8969 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.7007
Biowin6 (MITI Non-Linear Model): 0.8275
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.6274
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): 4.57 Pa (0.0343 mm Hg)
Log Koa (Koawin est ): 4.947
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 6.56E-007
Octanol/air (Koa) model: 2.17E-008
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 2.37E-005
Mackay model : 5.25E-005
Octanol/air (Koa) model: 1.74E-006
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 11.0649 E-12 cm3/molecule-sec
Half-Life = 0.967 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 11.600 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Reaction With Nitrate Radicals May Be Important!
Fraction sorbed to airborne particulates (phi):
3.81E-005 (Junge-Pankow, Mackay avg)
1.74E-006 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 88.05 L/kg (MCI method)
Log Koc: 1.945 (MCI method)
Koc : 273.4 L/kg (Kow method)
Log Koc: 2.437 (Kow method)
Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
Total Kb for pH > 8 at 25 deg C : 3.998E-002 L/mol-sec
Kb Half-Life at pH 8: 200.670 days
Kb Half-Life at pH 7: 5.494 years
(Total Kb applies only to esters, carbmates, alkyl halides)
Bioaccumulation Estimates (BCFBAF v3.00):
Log BCF from regression-based method = 1.349 (BCF = 22.36 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -1.4939 days (HL = 0.03207 days)
Log BCF Arnot-Gobas method (upper trophic) = 0.966 (BCF = 9.242)
Log BAF Arnot-Gobas method (upper trophic) = 0.966 (BAF = 9.242)
log Kow used: 2.55 (expkow database)
Volatilization from Water:
Henry LC: 9.81E-005 atm-m3/mole (Henry experimental database)
Half-Life from Model River: 8.62 hours
Half-Life from Model Lake : 197.5 hours (8.228 days)
Removal In Wastewater Treatment:
Total removal: 7.87 percent
Total biodegradation: 0.10 percent
Total sludge adsorption: 3.04 percent
Total to Air: 4.73 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 2.98 23.2 1000
Water 26.5 360 1000
Soil 70.4 720 1000
Sediment 0.143 3.24e+003 0
Persistence Time: 379 hr