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CAS Num: 000097-87-0
SMILES : O=C(C(C)C)OCCCC
CHEM : BUTYLISOBUTYRATE
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) = 2.76
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN 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): 3.18 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 423 (Mean VP of Antoine & Grain methods)
MP (exp database): <25 deg C
BP (exp database): 155 deg C
Water Solubility Estimate from Log Kow (WSKOW v1.41):
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: 9.74E-004 atm-m3/mole (9.87E+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: 1.692E-003 atm-m3/mole (1.714E+002 Pa-m3/mole)
VP: 3.18 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) : 0.9615
Biowin2 (Non-Linear Model) : 0.9990
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.3190 (days-weeks )
Biowin4 (Primary Survey Model) : 4.1377 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.7256
Biowin6 (MITI Non-Linear Model): 0.8865
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.3636
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): 387 Pa (2.9 mm Hg)
Log Koa (Koawin est ): 4.289
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 7.76E-009
Octanol/air (Koa) model: 4.78E-009
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 2.8E-007
Mackay model : 6.21E-007
Octanol/air (Koa) model: 3.82E-007
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 5.5032 E-12 cm3/molecule-sec
Half-Life = 1.944 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 23.323 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
4.5E-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 : 55.32 L/kg (MCI method)
Log Koc: 1.743 (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 : 3.709E-002 L/mol-sec
Kb Half-Life at pH 8: 216.263 days
Kb Half-Life at pH 7: 5.921 years
(Total Kb applies only to esters, carbmates, alkyl halides)
Bioaccumulation Estimates (BCFBAF v3.00):
Log BCF from regression-based method = 1.485 (BCF = 30.54 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -1.1699 days (HL = 0.06763 days)
Log BCF Arnot-Gobas method (upper trophic) = 1.265 (BCF = 18.41)
Log BAF Arnot-Gobas method (upper trophic) = 1.265 (BAF = 18.41)
log Kow used: 2.76 (estimated)
Volatilization from Water:
Henry LC: 0.000974 atm-m3/mole (estimated by Group SAR Method)
Half-Life from Model River: 1.947 hours
Half-Life from Model Lake : 121.9 hours (5.081 days)
Removal In Wastewater Treatment:
Total removal: 31.55 percent
Total biodegradation: 0.09 percent
Total sludge adsorption: 3.28 percent
Total to Air: 28.18 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 16 46.7 1000
Water 34.6 208 1000
Soil 49.2 416 1000
Sediment 0.127 1.87e+003 0
Persistence Time: 159 hr