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CAS Number: 111-01-3


CHEM : Tetracosane, 2,6,10,15,19,23-hexamethyl-

MOL FOR: C30 H62

MOL WT : 422.83

------------------------------ 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) = 14.63

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

Boiling Pt (deg C): 408.49 (Adapted Stein & Brown method)

Melting Pt (deg C): 74.73 (Mean or Weighted MP)

VP(mm Hg,25 deg C): 0.000275 (Modified Grain method)

VP (Pa, 25 deg C) : 0.0367 (Modified Grain method)

MP (exp database): -38 deg C

BP (exp database): 350 deg C

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

Water Solubility at 25 deg C (mg/L): 2.042e-010

log Kow used: 14.63 (estimated)

no-melting pt equation used

Water Sol Estimate from Fragments:

Wat Sol (v1.01 est) = 4.2283e-007 mg/L

ECOSAR Class Program (ECOSAR v1.00):

Class(es) found:

Neutral Organics

Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:

Bond Method : 1.53E+003 atm-m3/mole (1.55E+008 Pa-m3/mole)

Group Method: 2.03E+004 atm-m3/mole (2.06E+009 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: 7.493E+005 atm-m3/mole (7.592E+010 Pa-m3/mole)

VP: 0.000275 mm Hg (source: MPBPVP)

WS: 2.04E-010 mg/L (source: WSKOWWIN)

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

Log Kow used: 14.63 (KowWin est)

Log Kaw used: 4.796 (HenryWin est)

Log Koa (KOAWIN v1.10 estimate): 9.834

Log Koa (experimental database): None

Probability of Rapid Biodegradation (BIOWIN v4.10):

Biowin1 (Linear Model) : 0.5462

Biowin2 (Non-Linear Model) : 0.0476

Expert Survey Biodegradation Results:

Biowin3 (Ultimate Survey Model): 2.2648 (weeks-months)

Biowin4 (Primary Survey Model) : 3.2377 (weeks )

MITI Biodegradation Probability:

Biowin5 (MITI Linear Model) : -0.0559

Biowin6 (MITI Non-Linear Model): 0.0372

Anaerobic Biodegradation Probability:

Biowin7 (Anaerobic Linear Model): -0.3798

Ready Biodegradability Prediction: NO

Hydrocarbon Biodegradation (BioHCwin v1.01):

LOG BioHC Half-Life (days) : 2.5230

BioHC Half-Life (days) : 333.4541

Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:

Vapor pressure (liquid/subcooled): 0.0367 Pa (0.000275 mm Hg)

Log Koa (Koawin est ): 9.834

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

Mackay model : 8.18E-005

Octanol/air (Koa) model: 0.00167

Fraction sorbed to airborne particulates (phi):

Junge-Pankow model : 0.00295

Mackay model : 0.0065

Octanol/air (Koa) model: 0.118

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

Hydroxyl Radicals Reaction:

OVERALL OH Rate Constant = 40.4595 E-12 cm3/molecule-sec

Half-Life = 0.264 Days (12-hr day; 1.5E6 OH/cm3)

Half-Life = 3.172 Hrs

Ozone Reaction:

No Ozone Reaction Estimation

Fraction sorbed to airborne particulates (phi):

0.00472 (Junge-Pankow, Mackay avg)

0.118 (Koa method)

Note: the sorbed fraction may be resistant to atmospheric oxidation

Soil Adsorption Coefficient (KOCWIN v2.00):

Koc : 1.007E+008 L/kg (MCI method)

Log Koc: 8.003 (MCI method)

Koc : 4.977E+012 L/kg (Kow method)

Log Koc: 12.697 (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) = 3.0766 days (HL = 1193 days)

Log BCF Arnot-Gobas method (upper trophic) = -0.048 (BCF = 0.8945)

Log BAF Arnot-Gobas method (upper trophic) = 0.889 (BAF = 7.742)

log Kow used: 14.63 (estimated)

Volatilization from Water:

Henry LC: 1.53E+003 atm-m3/mole (estimated by Bond SAR Method)

Half-Life from Model River: 2.098 hours

Half-Life from Model Lake : 195.3 hours (8.138 days)

Removal In Wastewater Treatment:

Total removal: 94.04 percent

Total biodegradation: 0.78 percent

Total sludge adsorption: 93.25 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 1.7 6.35 1000

Water 61.4 900 1000

Soil 36.8 1.8e+003 1000

Sediment 0.0173 8.1e+003 0

Persistence Time: 307 hr

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