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CAS Number: 1663-39-4
SMILES : O=C(OC(C)(C)C)C=C
CHEM : 2-Propenoic acid, 1,1-dimethylethyl ester
MOL FOR: C7 H12 O2
MOL WT : 128.17
------------------------------ EPI SUMMARY (v4.10) --------------------------
Physical Property Inputs:
Log Kow (octanol-water): ------
Boiling Point (deg C) : ------
Melting Point (deg C) : ------
Vapor Pressure (mm Hg) : ------
Water Solubility (mg/L): ------
Henry LC (atm-m3/mole) : ------
Log Octanol-Water Partition Coef (SRC):
Log Kow (KOWWIN v1.68 estimate) = 2.09
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 124.09 (Adapted Stein & Brown method)
Melting Pt (deg C): -51.36 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 13 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 1.74E+003 (Mean VP of Antoine & Grain methods)
Water Solubility Estimate from Log Kow (WSKOW v1.42):
Water Solubility at 25 deg C (mg/L): 1534
log Kow used: 2.09 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 3532.8 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Acrylates
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 2.16E-004 atm-m3/mole (2.19E+001 Pa-m3/mole)
Group Method: 1.34E-004 atm-m3/mole (1.36E+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: 1.429E-003 atm-m3/mole (1.448E+002 Pa-m3/mole)
VP: 13 mm Hg (source: MPBPVP)
WS: 1.53E+003 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 2.09 (KowWin est)
Log Kaw used: -2.054 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 4.144
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.6768
Biowin2 (Non-Linear Model) : 0.9719
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.8440 (weeks )
Biowin4 (Primary Survey Model) : 3.7383 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.7620
Biowin6 (MITI Non-Linear Model): 0.8599
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.2144
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): 1.61E+003 Pa (12.1 mm Hg)
Log Koa (Koawin est ): 4.144
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 1.86E-009
Octanol/air (Koa) model: 3.42E-009
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 6.72E-008
Mackay model : 1.49E-007
Octanol/air (Koa) model: 2.74E-007
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 9.7068 E-12 cm3/molecule-sec
Half-Life = 1.102 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 13.223 Hrs
Ozone Reaction:
OVERALL Ozone Rate Constant = 0.175000 E-17 cm3/molecule-sec
Half-Life = 6.549 Days (at 7E11 mol/cm3)
Fraction sorbed to airborne particulates (phi):
1.08E-007 (Junge-Pankow, Mackay avg)
2.74E-007 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 23.14 L/kg (MCI method)
Log Koc: 1.364 (MCI method)
Koc : 103.6 L/kg (Kow method)
Log Koc: 2.016 (Kow method)
Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
Total Kb for pH > 8 at 25 deg C : 9.309E-003 L/mol-sec
Kb Half-Life at pH 8: 2.359 years
Kb Half-Life at pH 7: 23.593 years
(Total Kb applies only to esters, carbmates, alkyl halides)
Bioaccumulation Estimates (BCFBAF v3.01):
Log BCF from regression-based method = 1.046 (BCF = 11.12 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -1.2505 days (HL = 0.05617 days)
Log BCF Arnot-Gobas method (upper trophic) = 0.875 (BCF = 7.497)
Log BAF Arnot-Gobas method (upper trophic) = 0.875 (BAF = 7.497)
log Kow used: 2.09 (estimated)
Volatilization from Water:
Henry LC: 0.000134 atm-m3/mole (estimated by Group SAR Method)
Half-Life from Model River: 6.102 hours
Half-Life from Model Lake : 161.5 hours (6.729 days)
Removal In Wastewater Treatment:
Total removal: 8.49 percent
Total biodegradation: 0.09 percent
Total sludge adsorption: 2.13 percent
Total to Air: 6.27 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 4.62 22.6 1000
Water 35.5 360 1000
Soil 59.8 720 1000
Sediment 0.0994 3.24e+003 0
Persistence Time: 286 hr