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CAS Number: 3002-24-2
SMILES : O=C(CC(=O)C)CC
CHEM : 2,4-Hexanedione
MOL FOR: C6 H10 O2
MOL WT : 114.15
------------------------------ 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) = 0.54
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 162.59 (Adapted Stein & Brown method)
Melting Pt (deg C): -17.32 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 3.29 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 438 (Mean VP of Antoine & Grain methods)
BP (exp database): 160 deg C
Water Solubility Estimate from Log Kow (WSKOW v1.42):
Water Solubility at 25 deg C (mg/L): 3.618e+004
log Kow used: 0.54 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 5.0516e+005 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Diketones
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 4.43E-008 atm-m3/mole (4.48E-003 Pa-m3/mole)
Group Method: Incomplete
For Henry LC Comparison Purposes:
User-Entered Henry LC: not entered
Henrys LC [via VP/WSol estimate using User-Entered or Estimated values]:
HLC: 1.366E-005 atm-m3/mole (1.384E+000 Pa-m3/mole)
VP: 3.29 mm Hg (source: MPBPVP)
WS: 3.62E+004 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 0.54 (KowWin est)
Log Kaw used: -5.742 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 6.282
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.7069
Biowin2 (Non-Linear Model) : 0.6182
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.9020 (weeks )
Biowin4 (Primary Survey Model) : 3.6386 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.7077
Biowin6 (MITI Non-Linear Model): 0.8576
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): -0.0549
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): 401 Pa (3.01 mm Hg)
Log Koa (Koawin est ): 6.282
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 7.48E-009
Octanol/air (Koa) model: 4.7E-007
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 2.7E-007
Mackay model : 5.98E-007
Octanol/air (Koa) model: 3.76E-005
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 1.8583 E-12 cm3/molecule-sec
Half-Life = 5.756 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 69.070 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
4.34E-007 (Junge-Pankow, Mackay avg)
3.76E-005 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 1.785 L/kg (MCI method)
Log Koc: 0.252 (MCI method)
Koc : 41.21 L/kg (Kow method)
Log Koc: 1.615 (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 v3.01):
Log BCF from regression-based method = 0.500 (BCF = 3.162 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -1.4843 days (HL = 0.03279 days)
Log BCF Arnot-Gobas method (upper trophic) = 0.042 (BCF = 1.102)
Log BAF Arnot-Gobas method (upper trophic) = 0.042 (BAF = 1.102)
log Kow used: 0.54 (estimated)
Volatilization from Water:
Henry LC: 4.43E-008 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 1.412E+004 hours (588.4 days)
Half-Life from Model Lake : 1.541E+005 hours (6423 days)
Removal In Wastewater Treatment:
Total removal: 1.86 percent
Total biodegradation: 0.09 percent
Total sludge adsorption: 1.77 percent
Total to Air: 0.00 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 0.895 138 1000
Water 37.9 360 1000
Soil 61.1 720 1000
Sediment 0.0723 3.24e+003 0
Persistence Time: 546 hr