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CAS Number: 2177-83-5
SMILES : O=C(OC)CCCC(C)C
CHEM : HEXANOIC ACID, 5-METHYL-, METHYL ESTER
MOL FOR: C8 H16 O2
MOL WT : 144.22
------------------------------ 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) = 2.76
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 157.09 (Adapted Stein & Brown method)
Melting Pt (deg C): -43.92 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 2.88 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 384 (Mean VP of Antoine & Grain methods)
Water Solubility Estimate from Log Kow (WSKOW v1.42):
Water Solubility at 25 deg C (mg/L): 356.7
log Kow used: 2.76 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 759.6 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Esters
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 7.23E-004 atm-m3/mole (7.33E+001 Pa-m3/mole)
Group Method: 7.92E-004 atm-m3/mole (8.02E+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: 1.532E-003 atm-m3/mole (1.552E+002 Pa-m3/mole)
VP: 2.88 mm Hg (source: MPBPVP)
WS: 357 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 2.76 (KowWin est)
Log Kaw used: -1.529 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 4.289
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.8531
Biowin2 (Non-Linear Model) : 0.9936
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.0207 (weeks )
Biowin4 (Primary Survey Model) : 3.8686 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.7256
Biowin6 (MITI Non-Linear Model): 0.8865
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.6813
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): 351 Pa (2.63 mm Hg)
Log Koa (Koawin est ): 4.289
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 8.56E-009
Octanol/air (Koa) model: 4.78E-009
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 3.09E-007
Mackay model : 6.84E-007
Octanol/air (Koa) model: 3.82E-007
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 6.1206 E-12 cm3/molecule-sec
Half-Life = 1.748 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 20.970 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
4.97E-007 (Junge-Pankow, Mackay avg)
3.82E-007 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 54.22 L/kg (MCI method)
Log Koc: 1.734 (MCI method)
Koc : 243.3 L/kg (Kow method)
Log Koc: 2.386 (Kow method)
Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
Total Kb for pH > 8 at 25 deg C : 6.634E-002 L/mol-sec
Kb Half-Life at pH 8: 120.916 days
Kb Half-Life at pH 7: 3.310 years
(Total Kb applies only to esters, carbmates, alkyl halides)
Bioaccumulation Estimates (BCFBAF v3.01):
Log BCF from regression-based method = 1.485 (BCF = 30.54 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -1.2040 days (HL = 0.06252 days)
Log BCF Arnot-Gobas method (upper trophic) = 1.242 (BCF = 17.45)
Log BAF Arnot-Gobas method (upper trophic) = 1.242 (BAF = 17.45)
log Kow used: 2.76 (estimated)
Volatilization from Water:
Henry LC: 0.000792 atm-m3/mole (estimated by Group SAR Method)
Half-Life from Model River: 2.113 hours
Half-Life from Model Lake : 123.8 hours (5.156 days)
Removal In Wastewater Treatment:
Total removal: 27.97 percent
Total biodegradation: 0.09 percent
Total sludge adsorption: 3.37 percent
Total to Air: 24.51 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 12.6 42 1000
Water 35.6 360 1000
Soil 51.6 720 1000
Sediment 0.145 3.24e+003 0
Persistence Time: 205 hr