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CAS Num: 001733-25-1
SMILES : O=C(OC(C)C)C(=CC)C
CHEM : 2-Butenoic acid, 2-methyl-, 1-methylethyl ester, (E)-
MOL FOR: C8 H14 O2
MOL WT : 142.20
------------------------------ 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
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
Boiling Pt (deg C): 157.86 (Adapted Stein & Brown method)
Melting Pt (deg C): -53.22 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 2.78 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 370 (Mean VP of Antoine & Grain methods)
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 497.1
log Kow used: 2.60 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 2723 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Methacrylates
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 4.00E-004 atm-m3/mole (4.05E+001 Pa-m3/mole)
Group Method: 9.09E-004 atm-m3/mole (9.21E+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: 1.046E-003 atm-m3/mole (1.060E+002 Pa-m3/mole)
VP: 2.78 mm Hg (source: MPBPVP)
WS: 497 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 2.60 (KowWin est)
Log Kaw used: -1.786 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 4.386
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.8540
Biowin2 (Non-Linear Model) : 0.9938
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.0251 (weeks )
Biowin4 (Primary Survey Model) : 3.8715 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.5900
Biowin6 (MITI Non-Linear Model): 0.7054
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.4503
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): 337 Pa (2.53 mm Hg)
Log Koa (Koawin est ): 4.386
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 8.89E-009
Octanol/air (Koa) model: 5.97E-009
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 3.21E-007
Mackay model : 7.11E-007
Octanol/air (Koa) model: 4.78E-007
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 34.1256 E-12 cm3/molecule-sec
Half-Life = 0.313 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 3.761 Hrs
Ozone Reaction:
OVERALL Ozone Rate Constant = 7.393750 E-17 cm3/molecule-sec
Half-Life = 0.155 Days (at 7E11 mol/cm3)
Half-Life = 3.720 Hrs
Fraction sorbed to airborne particulates (phi):
5.16E-007 (Junge-Pankow, Mackay avg)
4.78E-007 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 48.71 L/kg (MCI method)
Log Koc: 1.688 (MCI method)
Koc : 198.4 L/kg (Kow method)
Log Koc: 2.298 (Kow method)
Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
Total Kb for pH > 8 at 25 deg C : 1.469E-003 L/mol-sec
Kb Half-Life at pH 8: 14.952 years
Kb Half-Life at pH 7: 149.517 years
(Total Kb applies only to esters, carbmates, alkyl halides)
Bioaccumulation Estimates (BCFBAF v3.00):
Log BCF from regression-based method = 1.380 (BCF = 23.99 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -0.9763 days (HL = 0.1056 days)
Log BCF Arnot-Gobas method (upper trophic) = 1.308 (BCF = 20.33)
Log BAF Arnot-Gobas method (upper trophic) = 1.308 (BAF = 20.33)
log Kow used: 2.60 (estimated)
Volatilization from Water:
Henry LC: 0.000909 atm-m3/mole (estimated by Group SAR Method)
Half-Life from Model River: 1.985 hours
Half-Life from Model Lake : 121.6 hours (5.068 days)
Removal In Wastewater Treatment:
Total removal: 29.91 percent
Total biodegradation: 0.08 percent
Total sludge adsorption: 2.71 percent
Total to Air: 27.11 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 1.48 2.49 1000
Water 43.3 360 1000
Soil 55.1 720 1000
Sediment 0.166 3.24e+003 0
Persistence Time: 165 hr