This page contains the EPI System Summary only.
For complete control of this information -
Download the free EPI SuiteTM v4.0 program : here
also you can go back to the Datasheet
CAS Number: 474-62-4
SMILES : OC(CC(=CCC1C(CC2)C3(C2C(CCC(C(C)C)C)C)C)C4(C)C1CC3)CC4
CHEM : Campesterol
MOL FOR: C28 H48 O1
MOL WT : 400.69
------------------------------ 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) = 9.16
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 437.37 (Adapted Stein & Brown method)
Melting Pt (deg C): 163.48 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 6.39E-010 (Modified Grain method)
VP (Pa, 25 deg C) : 8.52E-008 (Modified Grain method)
MP (exp database): 157.5 deg C
Subcooled liquid VP: 1.45E-008 mm Hg (25 deg C, Mod-Grain method)
: 1.94E-006 Pa (25 deg C, Mod-Grain method)
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 0.0001487
log Kow used: 9.16 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 0.0018192 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Neutral Organics
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 2.22E-004 atm-m3/mole (2.25E+001 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: 2.266E-006 atm-m3/mole (2.296E-001 Pa-m3/mole)
VP: 6.39E-010 mm Hg (source: MPBPVP)
WS: 0.000149 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 9.16 (KowWin est)
Log Kaw used: -2.042 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 11.202
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.3477
Biowin2 (Non-Linear Model) : 0.0066
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.0494 (months )
Biowin4 (Primary Survey Model) : 3.0922 (weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : -0.0080
Biowin6 (MITI Non-Linear Model): 0.0050
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): -1.4590
Ready Biodegradability Prediction: NO
Hydrocarbon Biodegradation (BioHCwin v1.01):
Structure incompatible with current estimation method!
Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
Vapor pressure (liquid/subcooled): 1.93E-006 Pa (1.45E-008 mm Hg)
Log Koa (Koawin est ): 11.202
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 1.55
Octanol/air (Koa) model: 0.0391
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 0.982
Mackay model : 0.992
Octanol/air (Koa) model: 0.758
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 130.9982 E-12 cm3/molecule-sec
Half-Life = 0.082 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 0.980 Hrs
Ozone Reaction:
OVERALL Ozone Rate Constant = 7.393750 E-17 cm3/molecule-sec
Half-Life = 0.155 Days (at 7E11 mol/cm3)
Half-Life = 3.720 Hrs
Fraction sorbed to airborne particulates (phi):
0.987 (Junge-Pankow, Mackay avg)
0.758 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 2.542E+006 L/kg (MCI method)
Log Koc: 6.405 (MCI method)
Koc : 3.805E+005 L/kg (Kow method)
Log Koc: 5.580 (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 = 3.067 (BCF = 1168 L/kg wet-wt)
Log Biotransformation Half-life (HL) = 2.3311 days (HL = 214.3 days)
Log BCF Arnot-Gobas method (upper trophic) = 2.280 (BCF = 190.5)
Log BAF Arnot-Gobas method (upper trophic) = 5.798 (BAF = 6.276e+005)
log Kow used: 9.16 (estimated)
Volatilization from Water:
Henry LC: 0.000222 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 7.322 hours
Half-Life from Model Lake : 247.7 hours (10.32 days)
Removal In Wastewater Treatment:
Total removal: 94.03 percent
Total biodegradation: 0.78 percent
Total sludge adsorption: 93.26 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 0.0267 1.28 1000
Water 9.13 1.44e+003 1000
Soil 66.7 2.88e+003 1000
Sediment 24.1 1.3e+004 0
Persistence Time: 2.17e+003 hr