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CAS Num: 000589-43-5
SMILES : CC(C)CC(C)CC
CHEM : 2,4-Dimethylhexane
MOL FOR: C8 H18
MOL WT : 114.23
------------------------------ 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) = 4.12
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
Boiling Pt (deg C): 91.17 (Adapted Stein & Brown method)
Melting Pt (deg C): -91.83 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 29.2 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 3.89E+003 (Mean VP of Antoine & Grain methods)
MP (exp database): < 25 deg C
BP (exp database): 109.5 deg C
VP (exp database): 3.04E+01 mm Hg (4.05E+003 Pa) at 25 deg C
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 9.204
log Kow used: 4.12 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 2.4522 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Neutral Organics
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 3.01E+000 atm-m3/mole (3.05E+005 Pa-m3/mole)
Group Method: 4.88E+000 atm-m3/mole (4.95E+005 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: 4.768E-001 atm-m3/mole (4.832E+004 Pa-m3/mole)
VP: 29.2 mm Hg (source: MPBPVP)
WS: 9.2 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 4.12 (KowWin est)
Log Kaw used: 2.090 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 2.030
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.6932
Biowin2 (Non-Linear Model) : 0.8000
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.9467 (weeks )
Biowin4 (Primary Survey Model) : 3.6829 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.3714
Biowin6 (MITI Non-Linear Model): 0.4913
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.2381
Ready Biodegradability Prediction: NO
Hydrocarbon Biodegradation (BioHCwin v1.01):
LOG BioHC Half-Life (days) : 0.8170
BioHC Half-Life (days) : 6.5616
Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
Vapor pressure (liquid/subcooled): 4.05E+003 Pa (30.4 mm Hg)
Log Koa (Koawin est ): 2.030
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 7.4E-010
Octanol/air (Koa) model: 2.63E-011
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 2.67E-008
Mackay model : 5.92E-008
Octanol/air (Koa) model: 2.1E-009
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 8.5522 E-12 cm3/molecule-sec
Half-Life = 1.251 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 15.008 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
4.3E-008 (Junge-Pankow, Mackay avg)
2.1E-009 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 323.4 L/kg (MCI method)
Log Koc: 2.510 (MCI method)
Koc : 3761 L/kg (Kow method)
Log Koc: 3.575 (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 = 2.387 (BCF = 244.1 L/kg wet-wt)
Log Biotransformation Half-life (HL) = 0.0836 days (HL = 1.212 days)
Log BCF Arnot-Gobas method (upper trophic) = 2.572 (BCF = 373.4)
Log BAF Arnot-Gobas method (upper trophic) = 2.573 (BAF = 373.8)
log Kow used: 4.12 (estimated)
Volatilization from Water:
Henry LC: 3.01 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 1.091 hours
Half-Life from Model Lake : 101.5 hours (4.23 days)
Removal In Wastewater Treatment (recommended maximum 95%):
Total removal: 99.93 percent
Total biodegradation: 0.07 percent
Total sludge adsorption: 20.70 percent
Total to Air: 79.16 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 28.2 30 1000
Water 69.9 360 1000
Soil 1.01 720 1000
Sediment 0.965 3.24e+003 0
Persistence Time: 87.9 hr