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 Num: 001455-20-5
SMILES : s(cc1)c(c1)CCCC
CHEM : THIOPHENE, 2-BUTYL-
MOL FOR: C8 H12 S1
MOL WT : 140.24
------------------------------ 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) = 3.83
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
Boiling Pt (deg C): 200.67 (Adapted Stein & Brown method)
Melting Pt (deg C): 8.45 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 0.898 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 120 (Mean VP of Antoine & Grain methods)
BP (exp database): 181.5 deg C
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 44.45
log Kow used: 3.83 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 43.847 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Thiophenes
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 7.56E-003 atm-m3/mole (7.66E+002 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: 3.728E-003 atm-m3/mole (3.777E+002 Pa-m3/mole)
VP: 0.898 mm Hg (source: MPBPVP)
WS: 44.5 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 3.83 (KowWin est)
Log Kaw used: -0.510 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 4.340
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.8439
Biowin2 (Non-Linear Model) : 0.9689
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.1127 (weeks )
Biowin4 (Primary Survey Model) : 3.8459 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.3631
Biowin6 (MITI Non-Linear Model): 0.3992
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.0827
Ready Biodegradability Prediction: NO
Hydrocarbon Biodegradation (BioHCwin v1.01):
LOG BioHC Half-Life (days) : 1.3499
BioHC Half-Life (days) : 22.3806
Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
Vapor pressure (liquid/subcooled): 109 Pa (0.816 mm Hg)
Log Koa (Koawin est ): 4.340
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 2.76E-008
Octanol/air (Koa) model: 5.37E-009
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 9.96E-007
Mackay model : 2.21E-006
Octanol/air (Koa) model: 4.3E-007
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 27.5586 E-12 cm3/molecule-sec
Half-Life = 0.388 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 4.657 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
1.6E-006 (Junge-Pankow, Mackay avg)
4.3E-007 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 813.1 L/kg (MCI method)
Log Koc: 2.910 (MCI method)
Koc : 2107 L/kg (Kow method)
Log Koc: 3.324 (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 = 2.197 (BCF = 157.2 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -0.1072 days (HL = 0.7813 days)
Log BCF Arnot-Gobas method (upper trophic) = 2.354 (BCF = 226)
Log BAF Arnot-Gobas method (upper trophic) = 2.354 (BAF = 226.1)
log Kow used: 3.83 (estimated)
Volatilization from Water:
Henry LC: 0.00756 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 1.3 hours
Half-Life from Model Lake : 113.5 hours (4.728 days)
Removal In Wastewater Treatment:
Total removal: 78.14 percent
Total biodegradation: 0.11 percent
Total sludge adsorption: 15.59 percent
Total to Air: 62.44 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 3.99 9.31 1000
Water 30.6 360 1000
Soil 64.5 720 1000
Sediment 0.905 3.24e+003 0
Persistence Time: 205 hr