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CAS Num: 000646-07-1
SMILES : O=C(O)CCC(C)C
CHEM : Pentanoic acid, 4-methyl-
MOL FOR: C6 H12 O2
MOL WT : 116.16
------------------------------ 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) = 1.98
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
Boiling Pt (deg C): 195.80 (Adapted Stein & Brown method)
Melting Pt (deg C): 15.24 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 0.352 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 46.9 (Mean VP of Antoine & Grain methods)
MP (exp database): -33 deg C
BP (exp database): 200.5 deg C
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 5266
log Kow used: 1.98 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 17781 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 : 1.70E-006 atm-m3/mole (1.72E-001 Pa-m3/mole)
Group Method: 1.41E-006 atm-m3/mole (1.43E-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: 1.022E-005 atm-m3/mole (1.035E+000 Pa-m3/mole)
VP: 0.352 mm Hg (source: MPBPVP)
WS: 5.27E+003 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 1.98 (KowWin est)
Log Kaw used: -4.158 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 6.138
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.7649
Biowin2 (Non-Linear Model) : 0.8810
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.3071 (days-weeks )
Biowin4 (Primary Survey Model) : 4.0657 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.5967
Biowin6 (MITI Non-Linear Model): 0.7512
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.7498
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): 42.9 Pa (0.322 mm Hg)
Log Koa (Koawin est ): 6.138
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 6.99E-008
Octanol/air (Koa) model: 3.37E-007
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 2.52E-006
Mackay model : 5.59E-006
Octanol/air (Koa) model: 2.7E-005
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 5.5154 E-12 cm3/molecule-sec
Half-Life = 1.939 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 23.271 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
4.06E-006 (Junge-Pankow, Mackay avg)
2.7E-005 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 7.33 L/kg (MCI method)
Log Koc: 0.865 (MCI method)
Koc : 17.82 L/kg (Kow method)
Log Koc: 1.251 (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) = -0.4995 days (HL = 0.3166 days)
Log BCF Arnot-Gobas method (upper trophic) = 0.987 (BCF = 9.696)
Log BAF Arnot-Gobas method (upper trophic) = 0.987 (BAF = 9.696)
log Kow used: 1.98 (estimated)
Volatilization from Water:
Henry LC: 1.41E-006 atm-m3/mole (estimated by Group SAR Method)
Half-Life from Model River: 448.6 hours (18.69 days)
Half-Life from Model Lake : 4985 hours (207.7 days)
Removal In Wastewater Treatment:
Total removal: 2.31 percent
Total biodegradation: 0.10 percent
Total sludge adsorption: 2.13 percent
Total to Air: 0.08 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 4.87 46.5 1000
Water 36.8 208 1000
Soil 58.3 416 1000
Sediment 0.0738 1.87e+003 0
Persistence Time: 265 hr