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CAS Number: 106887-88-1


CHEM : 2-methylbutyl 2-ethylhexanoate

MOL FOR: C13 H26 O2

MOL WT : 214.35

------------------------------ 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) = 5.14

Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):

Boiling Pt (deg C): 244.09 (Adapted Stein & Brown method)

Melting Pt (deg C): 2.15 (Mean or Weighted MP)

VP(mm Hg,25 deg C): 0.0373 (Mean VP of Antoine & Grain methods)

VP (Pa, 25 deg C) : 4.97 (Mean VP of Antoine & Grain methods)

Water Solubility Estimate from Log Kow (WSKOW v1.42):

Water Solubility at 25 deg C (mg/L): 1.512

log Kow used: 5.14 (estimated)

no-melting pt equation used

Water Sol Estimate from Fragments:

Wat Sol (v1.01 est) = 3.9071 mg/L

ECOSAR Class Program (ECOSAR v1.00):

Class(es) found:


Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:

Bond Method : 2.98E-003 atm-m3/mole (3.02E+002 Pa-m3/mole)

Group Method: 6.58E-003 atm-m3/mole (6.67E+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: 6.958E-003 atm-m3/mole (7.050E+002 Pa-m3/mole)

VP: 0.0373 mm Hg (source: MPBPVP)

WS: 1.51 mg/L (source: WSKOWWIN)

Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:

Log Kow used: 5.14 (KowWin est)

Log Kaw used: -0.914 (HenryWin est)

Log Koa (KOAWIN v1.10 estimate): 6.054

Log Koa (experimental database): None

Probability of Rapid Biodegradation (BIOWIN v4.10):

Biowin1 (Linear Model) : 0.9281

Biowin2 (Non-Linear Model) : 0.9972

Expert Survey Biodegradation Results:

Biowin3 (Ultimate Survey Model): 3.1640 (weeks )

Biowin4 (Primary Survey Model) : 4.0365 (days )

MITI Biodegradation Probability:

Biowin5 (MITI Linear Model) : 0.6150

Biowin6 (MITI Non-Linear Model): 0.7754

Anaerobic Biodegradation Probability:

Biowin7 (Anaerobic Linear Model): 0.1962

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): 4.8 Pa (0.036 mm Hg)

Log Koa (Koawin est ): 6.054

Kp (particle/gas partition coef. (m3/ug)):

Mackay model : 6.25E-007

Octanol/air (Koa) model: 2.78E-007

Fraction sorbed to airborne particulates (phi):

Junge-Pankow model : 2.26E-005

Mackay model : 5E-005

Octanol/air (Koa) model: 2.22E-005

Atmospheric Oxidation (25 deg C) [AopWin v1.92]:

Hydroxyl Radicals Reaction:

OVERALL OH Rate Constant = 12.6247 E-12 cm3/molecule-sec

Half-Life = 0.847 Days (12-hr day; 1.5E6 OH/cm3)

Half-Life = 10.167 Hrs

Ozone Reaction:

No Ozone Reaction Estimation

Fraction sorbed to airborne particulates (phi):

3.63E-005 (Junge-Pankow, Mackay avg)

2.22E-005 (Koa method)

Note: the sorbed fraction may be resistant to atmospheric oxidation

Soil Adsorption Coefficient (KOCWIN v2.00):

Koc : 1073 L/kg (MCI method)

Log Koc: 3.030 (MCI method)

Koc : 5042 L/kg (Kow method)

Log Koc: 3.703 (Kow method)

Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:

Total Kb for pH > 8 at 25 deg C : 8.935E-004 L/mol-sec

Kb Half-Life at pH 8: 24.581 years

Kb Half-Life at pH 7: 245.806 years

(Total Kb applies only to esters, carbmates, alkyl halides)

Bioaccumulation Estimates (BCFBAF v3.01):

Log BCF from regression-based method = 3.056 (BCF = 1139 L/kg wet-wt)

Log Biotransformation Half-life (HL) = -0.4912 days (HL = 0.3227 days)

Log BCF Arnot-Gobas method (upper trophic) = 2.124 (BCF = 133.2)

Log BAF Arnot-Gobas method (upper trophic) = 2.125 (BAF = 133.3)

log Kow used: 5.14 (estimated)

Volatilization from Water:

Henry LC: 0.00658 atm-m3/mole (estimated by Group SAR Method)

Half-Life from Model River: 1.624 hours

Half-Life from Model Lake : 140.5 hours (5.853 days)

Removal In Wastewater Treatment:

Total removal: 88.97 percent

Total biodegradation: 0.48 percent

Total sludge adsorption: 68.85 percent

Total to Air: 19.63 percent

(using 10000 hr Bio P,A,S)

Level III Fugacity Model:

Mass Amount Half-Life Emissions

(percent) (hr) (kg/hr)

Air 6.02 20.3 1000

Water 25.5 360 1000

Soil 67.5 720 1000

Sediment 0.952 3.24e+003 0

Persistence Time: 247 hr

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