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CAS Num: 000625-55-8
SMILES : O=COC(C)C
CHEM : Formic acid, 1-methylethyl ester
MOL FOR: C4 H8 O2
MOL WT : 88.11
------------------------------ 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) = 0.73
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
Boiling Pt (deg C): 65.12 (Adapted Stein & Brown method)
Melting Pt (deg C): -85.13 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 142 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 1.89E+004 (Mean VP of Antoine & Grain methods)
MP (exp database): -80 deg C
BP (exp database): 68.2 deg C
VP (exp database): 1.38E+02 mm Hg (1.84E+004 Pa) at 25 deg C
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 2.967e+004
log Kow used: 0.73 (estimated)
no-melting pt equation used
Water Sol (Exper. database match) = 2.07e+004 mg/L (25 deg C)
Exper. Ref: WAKITA,K ET AL. (1986)
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 39711 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Esters
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 4.23E-004 atm-m3/mole (4.29E+001 Pa-m3/mole)
Group Method: 6.43E-004 atm-m3/mole (6.52E+001 Pa-m3/mole)
Exper Database: 7.75E-04 atm-m3/mole (7.85E+001 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: 5.549E-004 atm-m3/mole (5.622E+001 Pa-m3/mole)
VP: 142 mm Hg (source: MPBPVP)
WS: 2.97E+004 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 0.73 (KowWin est)
Log Kaw used: -1.499 (exp database)
Log Koa (KOAWIN v1.10 estimate): 2.229
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.8798
Biowin2 (Non-Linear Model) : 0.9971
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.1447 (weeks )
Biowin4 (Primary Survey Model) : 3.9496 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.7439
Biowin6 (MITI Non-Linear Model): 0.9143
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.6829
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): 1.84E+004 Pa (138 mm Hg)
Log Koa (Koawin est ): 2.229
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 1.63E-010
Octanol/air (Koa) model: 4.16E-011
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 5.89E-009
Mackay model : 1.3E-008
Octanol/air (Koa) model: 3.33E-009
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 3.4386 E-12 cm3/molecule-sec
Half-Life = 3.111 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 37.327 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
9.47E-009 (Junge-Pankow, Mackay avg)
3.33E-009 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 5.583 L/kg (MCI method)
Log Koc: 0.747 (MCI method)
Koc : 18.34 L/kg (Kow method)
Log Koc: 1.263 (Kow method)
Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
Total Kb for pH > 8 at 25 deg C : 1.114E+001 L/mol-sec
Kb Half-Life at pH 8: 17.278 hours
Kb Half-Life at pH 7: 7.199 days
(Total Kb applies only to esters, carbmates, alkyl halides)
Bioaccumulation Estimates (BCFBAF v3.00):
Log BCF from regression-based method = 0.500 (BCF = 3.162 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -1.9988 days (HL = 0.01003 days)
Log BCF Arnot-Gobas method (upper trophic) = 0.022 (BCF = 1.053)
Log BAF Arnot-Gobas method (upper trophic) = 0.022 (BAF = 1.053)
log Kow used: 0.73 (estimated)
Volatilization from Water:
Henry LC: 0.000775 atm-m3/mole (Henry experimental database)
Half-Life from Model River: 1.667 hours
Half-Life from Model Lake : 96.89 hours (4.037 days)
Removal In Wastewater Treatment:
Total removal: 26.21 percent
Total biodegradation: 0.07 percent
Total sludge adsorption: 1.40 percent
Total to Air: 24.73 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 25.6 74.7 1000
Water 49.3 360 1000
Soil 25.1 720 1000
Sediment 0.102 3.24e+003 0
Persistence Time: 151 hr