2-Propyne-1-thiol C3H4S structure – Flashcards

Predicted data is generated using the ACD/Labs Percepta Platform – PhysChem Module

Predicted data is generated using the US Environmental Protection Agency’s EPISuite™

 
 Log Octanol-Water Partition Coef (SRC):
 Log Kow (KOWWIN v1.67 estimate) = 0.99

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 91.72 (Adapted Stein & Brown method)
 Melting Pt (deg C): -63.13 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 53.3 (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
 Water Solubility at 25 deg C (mg/L): 1.933e+004
 log Kow used: 0.99 (estimated)
 no-melting pt equation used

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 4142.3 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
 Class(es) found:
 Thiols(mercaptans)

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 5.70E-004 atm-m3/mole
 Group Method: Incomplete
 Henrys LC [VP/WSol estimate using EPI values]: 2.617E-004 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: 0.99 (KowWin est)
 Log Kaw used: -1.633 (HenryWin est)
 Log Koa (KOAWIN v1.10 estimate): 2.623
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : 0.7132
 Biowin2 (Non-Linear Model) : 0.8792
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 3.0398 (weeks )
 Biowin4 (Primary Survey Model) : 3.7437 (days-weeks )
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : 0.5470
 Biowin6 (MITI Non-Linear Model): 0.7054
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): 0.8621
 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): 6.81E+003 Pa (51.1 mm Hg)
 Log Koa (Koawin est ): 2.623
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 4.4E-010 
 Octanol/air (Koa) model: 1.03E-010 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 1.59E-008 
 Mackay model : 3.52E-008 
 Octanol/air (Koa) model: 8.24E-009 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 46.7852 E-12 cm3/molecule-sec
 Half-Life = 0.229 Days (12-hr day; 1.5E6 OH/cm3)
 Half-Life = 2.743 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): 2.56E-008 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 43.79
 Log Koc: 1.641 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
 Rate constants can NOT be estimated for this structure!

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
 Log BCF from regression-based method = 0.500 (BCF = 3.162)
 log Kow used: 0.99 (estimated)

 Volatilization from Water:
 Henry LC: 0.00057 atm-m3/mole (estimated by Bond SAR Method)
 Half-Life from Model River: 1.739 hours
 Half-Life from Model Lake : 90.18 hours (3.758 days)

 Removal In Wastewater Treatment:
 Total removal: 21.45 percent
 Total biodegradation: 0.08 percent
 Total sludge adsorption: 1.49 percent
 Total to Air: 19.89 percent
 (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
 Mass Amount Half-Life Emissions
 (percent) (hr) (kg/hr)
 Air 4.21 5.48 1000 
 Water 60.8 360 1000 
 Soil 34.9 720 1000 
 Sediment 0.122 3.24e+003 0 
 Persistence Time: 127 hr