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CAS Number: 25265-75-2
SMILES : OCCCCO
CHEM : Butanediol
MOL FOR: C4 H10 O2
MOL WT : 90.12
------------------------------ EPI SUMMARY (v4.11) --------------------------
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) = -0.22
Log Kow (Exper. database match) = -0.83
Exper. Ref: HANSCH,C ET AL. (1995)
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 195.56 (Adapted Stein & Brown method)
Melting Pt (deg C): -8.08 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 0.00544 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 0.725 (Mean VP of Antoine & Grain methods)
MP (exp database): 20.4 deg C
BP (exp database): 235 deg C
VP (exp database): 1.05E-02 mm Hg (1.40E+000 Pa) at 25 deg C
Water Solubility Estimate from Log Kow (WSKOW v1.42):
Water Solubility at 25 deg C (mg/L): 6.362e+005
log Kow used: -0.83 (expkow database)
no-melting pt equation used
Water Sol (Exper. database match) = 1e+006 mg/L (20 deg C)
Exper. Ref: YALKOWSKY,SH & DANNENFELSER,RM (1992)
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 1e+006 mg/L
ECOSAR Class Program (ECOSAR v1.11):
Class(es) found:
Neutral Organics
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 2.30E-007 atm-m3/mole (2.33E-002 Pa-m3/mole)
Group Method: 1.12E-010 atm-m3/mole (1.13E-005 Pa-m3/mole)
Exper Database: 1.30E-09 atm-m3/mole (1.32E-004 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: 1.014E-009 atm-m3/mole (1.027E-004 Pa-m3/mole)
VP: 0.00544 mm Hg (source: MPBPVP)
WS: 6.36E+005 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: -0.83 (exp database)
Log Kaw used: -7.275 (exp database)
Log Koa (KOAWIN v1.10 estimate): 6.445
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 1.0221
Biowin2 (Non-Linear Model) : 0.9814
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.3200 (days-weeks )
Biowin4 (Primary Survey Model) : 3.9766 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.9640
Biowin6 (MITI Non-Linear Model): 0.9747
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 1.2056
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): 1.4 Pa (0.0105 mm Hg)
Log Koa (Koawin est ): 6.445
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 2.14E-006
Octanol/air (Koa) model: 6.84E-007
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 7.74E-005
Mackay model : 0.000171
Octanol/air (Koa) model: 5.47E-005
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 11.1478 E-12 cm3/molecule-sec
Half-Life = 0.959 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 11.514 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
0.000124 (Junge-Pankow, Mackay avg)
5.47E-005 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 1 L/kg (MCI method)
Log Koc: 0.000 (MCI method)
Koc : 0.4397 L/kg (Kow method)
Log Koc: -0.357 (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) = -2.0496 days (HL = 0.00892 days)
Log BCF Arnot-Gobas method (upper trophic) = -0.047 (BCF = 0.8972)
Log BAF Arnot-Gobas method (upper trophic) = -0.047 (BAF = 0.8972)
log Kow used: -0.83 (expkow database)
Volatilization from Water:
Henry LC: 1.3E-009 atm-m3/mole (Henry experimental database)
Half-Life from Model River: 4.275E+005 hours (1.781E+004 days)
Half-Life from Model Lake : 4.664E+006 hours (1.943E+005 days)
Removal In Wastewater Treatment:
Total removal: 1.85 percent
Total biodegradation: 0.09 percent
Total sludge adsorption: 1.76 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 0.0448 23 1000
Water 33.6 208 1000
Soil 66.3 416 1000
Sediment 0.0594 1.87e+003 0
Persistence Time: 388 hr