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: 6089-09-4
SMILES : OC(=O)CCC#C
CHEM : 4-PENTYNOIC ACID
MOL FOR: C5 H6 O2
MOL WT : 98.10
------------------------------ EPI SUMMARY (v4.10) --------------------------
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) = 0.79
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 194.87 (Adapted Stein & Brown method)
Melting Pt (deg C): 20.22 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 0.211 (Modified Grain method)
VP (Pa, 25 deg C) : 28.2 (Modified Grain method)
MP (exp database): 57.7 deg C
Subcooled liquid VP: 0.425 mm Hg (25 deg C, Mod-Grain method)
: 56.6 Pa (25 deg C, Mod-Grain method)
Water Solubility Estimate from Log Kow (WSKOW v1.42):
Water Solubility at 25 deg C (mg/L): 6.239e+004
log Kow used: 0.79 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 60503 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Neutral Organics-acid
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 1.59E-007 atm-m3/mole (1.61E-002 Pa-m3/mole)
Group Method: 2.13E-008 atm-m3/mole (2.16E-003 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: 4.365E-007 atm-m3/mole (4.423E-002 Pa-m3/mole)
VP: 0.211 mm Hg (source: MPBPVP)
WS: 6.24E+004 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 0.79 (KowWin est)
Log Kaw used: -5.187 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 5.977
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.7735
Biowin2 (Non-Linear Model) : 0.9054
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.3470 (days-weeks )
Biowin4 (Primary Survey Model) : 4.0918 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.7003
Biowin6 (MITI Non-Linear Model): 0.8438
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 1.0748
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): 56.7 Pa (0.425 mm Hg)
Log Koa (Koawin est ): 5.977
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 5.29E-008
Octanol/air (Koa) model: 2.33E-007
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 1.91E-006
Mackay model : 4.24E-006
Octanol/air (Koa) model: 1.86E-005
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 9.5304 E-12 cm3/molecule-sec
Half-Life = 1.122 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 13.468 Hrs
Ozone Reaction:
OVERALL Ozone Rate Constant = 0.003000 E-17 cm3/molecule-sec
Half-Life = 382.000 Days (at 7E11 mol/cm3)
Fraction sorbed to airborne particulates (phi):
3.07E-006 (Junge-Pankow, Mackay avg)
1.86E-005 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 4.782 L/kg (MCI method)
Log Koc: 0.680 (MCI method)
Koc : 3.915 L/kg (Kow method)
Log Koc: 0.593 (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) = -1.1176 days (HL = 0.07627 days)
Log BCF Arnot-Gobas method (upper trophic) = 0.140 (BCF = 1.381)
Log BAF Arnot-Gobas method (upper trophic) = 0.140 (BAF = 1.381)
log Kow used: 0.79 (estimated)
Volatilization from Water:
Henry LC: 2.13E-008 atm-m3/mole (estimated by Group SAR Method)
Half-Life from Model River: 2.723E+004 hours (1134 days)
Half-Life from Model Lake : 2.971E+005 hours (1.238E+004 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 0.605 26.8 1000
Water 32 208 1000
Soil 67.3 416 1000
Sediment 0.0612 1.87e+003 0
Persistence Time: 367 hr