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CAS Number: 98-98-6
SMILES : O=C(O)c(nccc1)c1
CHEM : 2-Pyridinecarboxylic acid
MOL FOR: C6 H5 N1 O2
MOL WT : 123.11
------------------------------ 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) = 0.69
Log Kow (Exper. database match) = 0.72
Exper. Ref: HANSCH,C ET AL. (1995)
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 257.62 (Adapted Stein & Brown method)
Melting Pt (deg C): 63.27 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 0.00136 (Modified Grain method)
VP (Pa, 25 deg C) : 0.181 (Modified Grain method)
MP (exp database): 136.5 deg C
Subcooled liquid VP: 0.018 mm Hg (25 deg C, Mod-Grain method)
: 2.4 Pa (25 deg C, Mod-Grain method)
Water Solubility Estimate from Log Kow (WSKOW v1.42):
Water Solubility at 25 deg C (mg/L): 2.372e+004
log Kow used: 0.72 (expkow database)
no-melting pt equation used
Water Sol (Exper. database match) = 9.6e+005 mg/L (20 deg C)
Exper. Ref: KIRK-OTHMER; 4th ed, 20:645 (1996)
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 2.7444e+005 mg/L
ECOSAR Class Program (ECOSAR v1.11):
Class(es) found:
Pyridine-alpha-Acid -acid
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 1.42E-010 atm-m3/mole (1.44E-005 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: 9.288E-009 atm-m3/mole (9.411E-004 Pa-m3/mole)
VP: 0.00136 mm Hg (source: MPBPVP)
WS: 2.37E+004 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 0.72 (exp database)
Log Kaw used: -8.236 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 8.956
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.7112
Biowin2 (Non-Linear Model) : 0.8854
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.8008 (weeks )
Biowin4 (Primary Survey Model) : 3.6591 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.7222
Biowin6 (MITI Non-Linear Model): 0.8080
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 1.3610
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): 2.4 Pa (0.018 mm Hg)
Log Koa (Koawin est ): 8.956
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 1.25E-006
Octanol/air (Koa) model: 0.000222
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 4.51E-005
Mackay model : 0.0001
Octanol/air (Koa) model: 0.0174
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 0.6570 E-12 cm3/molecule-sec
Half-Life = 16.280 Days (12-hr day; 1.5E6 OH/cm3)
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
7.26E-005 (Junge-Pankow, Mackay avg)
0.0174 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 8.144 L/kg (MCI method)
Log Koc: 0.911 (MCI method)
Koc : 5.375 L/kg (Kow method)
Log Koc: 0.730 (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) = -1.4681 days (HL = 0.03403 days)
Log BCF Arnot-Gobas method (upper trophic) = 0.083 (BCF = 1.21)
Log BAF Arnot-Gobas method (upper trophic) = 0.083 (BAF = 1.21)
log Kow used: 0.72 (expkow database)
Volatilization from Water:
Henry LC: 1.42E-010 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 4.575E+006 hours (1.906E+005 days)
Half-Life from Model Lake : 4.991E+007 hours (2.079E+006 days)
Removal In Wastewater Treatment:
Total removal: 1.87 percent
Total biodegradation: 0.09 percent
Total sludge adsorption: 1.78 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 0.00307 391 1000
Water 31.6 360 1000
Soil 68.3 720 1000
Sediment 0.0687 3.24e+003 0
Persistence Time: 632 hr