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CAS Number: 6963-52-6


CHEM : hexan-2-yl butanoate

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) = 3.74

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

Boiling Pt (deg C): 198.83 (Adapted Stein & Brown method)

Melting Pt (deg C): -20.47 (Mean or Weighted MP)

VP(mm Hg,25 deg C): 0.382 (Mean VP of Antoine & Grain methods)

VP (Pa, 25 deg C) : 51 (Mean VP of Antoine & Grain methods)

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

Water Solubility at 25 deg C (mg/L): 38.59

log Kow used: 3.74 (estimated)

no-melting pt equation used

Water Sol Estimate from Fragments:

Wat Sol (v1.01 est) = 76.515 mg/L

ECOSAR Class Program (ECOSAR v1.00):

Class(es) found:


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: 2.08E-003 atm-m3/mole (2.11E+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: 2.244E-003 atm-m3/mole (2.274E+002 Pa-m3/mole)

VP: 0.382 mm Hg (source: MPBPVP)

WS: 38.6 mg/L (source: WSKOWWIN)

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

Log Kow used: 3.74 (KowWin est)

Log Kaw used: -1.285 (HenryWin est)

Log Koa (KOAWIN v1.10 estimate): 5.025

Log Koa (experimental database): None

Probability of Rapid Biodegradation (BIOWIN v4.10):

Biowin1 (Linear Model) : 0.9481

Biowin2 (Non-Linear Model) : 0.9985

Expert Survey Biodegradation Results:

Biowin3 (Ultimate Survey Model): 3.2570 (days-weeks )

Biowin4 (Primary Survey Model) : 4.0972 (days )

MITI Biodegradation Probability:

Biowin5 (MITI Linear Model) : 0.7410

Biowin6 (MITI Non-Linear Model): 0.8913

Anaerobic Biodegradation Probability:

Biowin7 (Anaerobic Linear Model): 0.4156

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): 46.7 Pa (0.35 mm Hg)

Log Koa (Koawin est ): 5.025

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

Mackay model : 6.43E-008

Octanol/air (Koa) model: 2.6E-008

Fraction sorbed to airborne particulates (phi):

Junge-Pankow model : 2.32E-006

Mackay model : 5.14E-006

Octanol/air (Koa) model: 2.08E-006

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

Hydroxyl Radicals Reaction:

OVERALL OH Rate Constant = 9.7996 E-12 cm3/molecule-sec

Half-Life = 1.091 Days (12-hr day; 1.5E6 OH/cm3)

Half-Life = 13.098 Hrs

Ozone Reaction:

No Ozone Reaction Estimation

Fraction sorbed to airborne particulates (phi):

3.73E-006 (Junge-Pankow, Mackay avg)

2.08E-006 (Koa method)

Note: the sorbed fraction may be resistant to atmospheric oxidation

Soil Adsorption Coefficient (KOCWIN v2.00):

Koc : 188.5 L/kg (MCI method)

Log Koc: 2.275 (MCI method)

Koc : 847.6 L/kg (Kow method)

Log Koc: 2.928 (Kow method)

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

Total Kb for pH > 8 at 25 deg C : 3.113E-002 L/mol-sec

Kb Half-Life at pH 8: 257.681 days

Kb Half-Life at pH 7: 7.055 years

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

Bioaccumulation Estimates (BCFBAF v3.00):

Log BCF from regression-based method = 2.133 (BCF = 135.8 L/kg wet-wt)

Log Biotransformation Half-life (HL) = -0.8916 days (HL = 0.1284 days)

Log BCF Arnot-Gobas method (upper trophic) = 1.700 (BCF = 50.15)

Log BAF Arnot-Gobas method (upper trophic) = 1.700 (BAF = 50.15)

log Kow used: 3.74 (estimated)

Volatilization from Water:

Henry LC: 0.00208 atm-m3/mole (estimated by Group SAR Method)

Half-Life from Model River: 1.709 hours

Half-Life from Model Lake : 128.7 hours (5.362 days)

Removal In Wastewater Treatment:

Total removal: 53.82 percent

Total biodegradation: 0.16 percent

Total sludge adsorption: 15.79 percent

Total to Air: 37.88 percent

(using 10000 hr Bio P,A,S)

Level III Fugacity Model:

Mass Amount Half-Life Emissions

(percent) (hr) (kg/hr)

Air 10.3 26.2 1000

Water 31.3 208 1000

Soil 58.2 416 1000

Sediment 0.234 1.87e+003 0

Persistence Time: 165 hr

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