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CAS Num: 001188-02-9

SMILES : O=C(O)C(CCCCC)C

CHEM : Heptanoic acid, 2-methyl-

MOL FOR: C8 H16 O2

MOL WT : 144.22

------------------------------ 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) = 2.96

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

Boiling Pt (deg C): 234.20 (Adapted Stein & Brown method)

Melting Pt (deg C): 37.72 (Mean or Weighted MP)

VP(mm Hg,25 deg C): 0.0458 (Modified Grain method)

VP (Pa, 25 deg C) : 6.1 (Modified Grain method)

Subcooled liquid VP: 0.0596 mm Hg (25 deg C, Mod-Grain method)

: 7.95 Pa (25 deg C, Mod-Grain method)

Water Solubility Estimate from Log Kow (WSKOW v1.41):

Water Solubility at 25 deg C (mg/L): 592.1

log Kow used: 2.96 (estimated)

no-melting pt equation used

Water Sol Estimate from Fragments:

Wat Sol (v1.01 est) = 1861.5 mg/L

ECOSAR Class Program (ECOSAR v1.00):

Class(es) found:

Neutral Organics-acid

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

Bond Method : 3.00E-006 atm-m3/mole (3.04E-001 Pa-m3/mole)

Group Method: 3.62E-006 atm-m3/mole (3.67E-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: 1.468E-005 atm-m3/mole (1.487E+000 Pa-m3/mole)

VP: 0.0458 mm Hg (source: MPBPVP)

WS: 592 mg/L (source: WSKOWWIN)

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

Log Kow used: 2.96 (KowWin est)

Log Kaw used: -3.911 (HenryWin est)

Log Koa (KOAWIN v1.10 estimate): 6.871

Log Koa (experimental database): None

Probability of Rapid Biodegradation (BIOWIN v4.10):

Biowin1 (Linear Model) : 0.8600

Biowin2 (Non-Linear Model) : 0.9692

Expert Survey Biodegradation Results:

Biowin3 (Ultimate Survey Model): 3.5434 (days-weeks )

Biowin4 (Primary Survey Model) : 4.2943 (hours-days )

MITI Biodegradation Probability:

Biowin5 (MITI Linear Model) : 0.6121

Biowin6 (MITI Non-Linear Model): 0.7602

Anaerobic Biodegradation Probability:

Biowin7 (Anaerobic Linear Model): 0.4841

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): 7.95 Pa (0.0596 mm Hg)

Log Koa (Koawin est ): 6.871

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

Mackay model : 3.78E-007

Octanol/air (Koa) model: 1.82E-006

Fraction sorbed to airborne particulates (phi):

Junge-Pankow model : 1.36E-005

Mackay model : 3.02E-005

Octanol/air (Koa) model: 0.000146

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

Hydroxyl Radicals Reaction:

OVERALL OH Rate Constant = 8.0322 E-12 cm3/molecule-sec

Half-Life = 1.332 Days (12-hr day; 1.5E6 OH/cm3)

Half-Life = 15.980 Hrs

Ozone Reaction:

No Ozone Reaction Estimation

Fraction sorbed to airborne particulates (phi):

2.19E-005 (Junge-Pankow, Mackay avg)

0.000146 (Koa method)

Note: the sorbed fraction may be resistant to atmospheric oxidation

Soil Adsorption Coefficient (KOCWIN v2.00):

Koc : 26 L/kg (MCI method)

Log Koc: 1.415 (MCI method)

Koc : 62.09 L/kg (Kow method)

Log Koc: 1.793 (Kow method)

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

Rate constants can NOT be estimated for this structure!

Bioaccumulation Estimates (BCFBAF v3.00):

Log BCF from regression-based method = 0.500 (BCF = 3.162 L/kg wet-wt)

Log Biotransformation Half-life (HL) = -0.1870 days (HL = 0.6501 days)

Log BCF Arnot-Gobas method (upper trophic) = 1.851 (BCF = 70.95)

Log BAF Arnot-Gobas method (upper trophic) = 1.851 (BAF = 70.95)

log Kow used: 2.96 (estimated)

Volatilization from Water:

Henry LC: 3.62E-006 atm-m3/mole (estimated by Group SAR Method)

Half-Life from Model River: 195.5 hours (8.144 days)

Half-Life from Model Lake : 2233 hours (93.04 days)

Removal In Wastewater Treatment:

Total removal: 5.55 percent

Total biodegradation: 0.12 percent

Total sludge adsorption: 5.24 percent

Total to Air: 0.20 percent

(using 10000 hr Bio P,A,S)

Level III Fugacity Model:

Mass Amount Half-Life Emissions

(percent) (hr) (kg/hr)

Air 3.93 32 1000

Water 32.8 208 1000

Soil 63.2 416 1000

Sediment 0.088 1.87e+003 0

Persistence Time: 269 hr

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