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CAS Number: 2445-78-5
SMILES : O=C(OCC(CC)C)C(CC)C
CHEM : Butanoic acid, 2-methyl-, 2-methylbutyl ester
MOL FOR: C10 H20 O2
MOL WT : 172.27
------------------------------ EPI SUMMARY (v4.00) --------------------------
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 v1.67 estimate) = 3.66
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 186.63 (Adapted Stein & Brown method)
Melting Pt (deg C): -31.53 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 0.699 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 93.2 (Mean VP of Antoine & Grain methods)
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 44.59
log Kow used: 3.66 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 128.23 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Esters
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 1.27E-003 atm-m3/mole (1.29E+002 Pa-m3/mole)
Group Method: 2.34E-003 atm-m3/mole (2.37E+002 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: 3.553E-003 atm-m3/mole (3.600E+002 Pa-m3/mole)
VP: 0.699 mm Hg (source: MPBPVP)
WS: 44.6 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 3.66 (KowWin est)
Log Kaw used: -1.285 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 4.945
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.8397
Biowin2 (Non-Linear Model) : 0.9905
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.9587 (weeks )
Biowin4 (Primary Survey Model) : 3.8282 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.5919
Biowin6 (MITI Non-Linear Model): 0.7623
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.4359
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): 84.8 Pa (0.636 mm Hg)
Log Koa (Koawin est ): 4.945
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 3.54E-008
Octanol/air (Koa) model: 2.16E-008
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 1.28E-006
Mackay model : 2.83E-006
Octanol/air (Koa) model: 1.73E-006
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 8.4796 E-12 cm3/molecule-sec
Half-Life = 1.261 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 15.137 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
2.05E-006 (Junge-Pankow, Mackay avg)
1.73E-006 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 169.3 L/kg (MCI method)
Log Koc: 2.229 (MCI method)
Koc : 765.5 L/kg (Kow method)
Log Koc: 2.884 (Kow method)
Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
Total Kb for pH > 8 at 25 deg C : 7.920E-003 L/mol-sec
Kb Half-Life at pH 8: 2.773 years
Kb Half-Life at pH 7: 27.733 years
(Total Kb applies only to esters, carbmates, alkyl halides)
Bioaccumulation Estimates (BCFBAF v3.00):
Log BCF from regression-based method = 2.084 (BCF = 121.4 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -0.9428 days (HL = 0.1141 days)
Log BCF Arnot-Gobas method (upper trophic) = 1.647 (BCF = 44.36)
Log BAF Arnot-Gobas method (upper trophic) = 1.647 (BAF = 44.36)
log Kow used: 3.66 (estimated)
Volatilization from Water:
Henry LC: 0.00234 atm-m3/mole (estimated by Group SAR Method)
Half-Life from Model River: 1.668 hours
Half-Life from Model Lake : 128.2 hours (5.344 days)
Removal In Wastewater Treatment:
Total removal: 55.03 percent
Total biodegradation: 0.14 percent
Total sludge adsorption: 13.47 percent
Total to Air: 41.42 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 11.2 30.3 1000
Water 34.2 360 1000
Soil 54.3 720 1000
Sediment 0.288 3.24e+003 0
Persistence Time: 192 hr