Methyl 3-oxobutane(dithioate) C5H8OS2 structure

Flashcard maker : Kenneth Miller

Molecular Formula C5H8OS2
Average mass 148.246 Da
Density 1.2±0.1 g/cm3
Boiling Point 232.1±23.0 °C at 760 mmHg
Flash Point 94.1±22.6 °C
Molar Refractivity 40.5±0.3 cm3
Polarizability 16.1±0.5 10-24cm3
Surface Tension 47.2±3.0 dyne/cm
Molar Volume 127.1±3.0 cm3
  • Predicted – ACD/Labs
  • Predicted – EPISuite
  • Predicted – ChemAxon

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

Density: 1.2±0.1 g/cm3
Boiling Point: 232.1±23.0 °C at 760 mmHg
Vapour Pressure: 0.1±0.5 mmHg at 25°C
Enthalpy of Vaporization: 46.9±3.0 kJ/mol
Flash Point: 94.1±22.6 °C
Index of Refraction: 1.550
Molar Refractivity: 40.5±0.3 cm3
#H bond acceptors: 1
#H bond donors: 0
#Freely Rotating Bonds: 3
#Rule of 5 Violations: 0
ACD/LogP: 0.85
ACD/LogD (pH 5.5): 1.00
ACD/BCF (pH 5.5): 3.40
ACD/KOC (pH 5.5): 83.63
ACD/LogD (pH 7.4): 1.00
ACD/BCF (pH 7.4): 3.40
ACD/KOC (pH 7.4): 83.63
Polar Surface Area: 74 Å2
Polarizability: 16.1±0.5 10-24cm3
Surface Tension: 47.2±3.0 dyne/cm
Molar Volume: 127.1±3.0 cm3

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

 
 Log Octanol-Water Partition Coef (SRC):
 Log Kow (KOWWIN v1.67 estimate) = -0.25

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 228.72 (Adapted Stein & Brown method)
 Melting Pt (deg C): 27.95 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 0.0741 (Modified Grain method)
 Subcooled liquid VP: 0.0787 mm Hg (25 deg C, Mod-Grain method)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
 Water Solubility at 25 deg C (mg/L): 1.259e+005
 log Kow used: -0.25 (estimated)
 no-melting pt equation used

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 1.5777e+005 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
 Class(es) found:
 Neutral Organics

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 4.50E-007 atm-m3/mole
 Group Method: Incomplete
 Henrys LC [VP/WSol estimate using EPI values]: 1.148E-007 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: -0.25 (KowWin est)
 Log Kaw used: -4.735 (HenryWin est)
 Log Koa (KOAWIN v1.10 estimate): 4.485
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : 0.6838
 Biowin2 (Non-Linear Model) : 0.6108
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 2.8491 (weeks )
 Biowin4 (Primary Survey Model) : 3.6116 (days-weeks )
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : 0.4391
 Biowin6 (MITI Non-Linear Model): 0.3889
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): 0.3110
 Ready Biodegradability Prediction: NO

Hydrocarbon Biodegradation (BioHCwin v1.01):
 Structure incompatible with current estimation method!

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
 Vapor pressure (liquid/subcooled): 10.5 Pa (0.0787 mm Hg)
 Log Koa (Koawin est ): 4.485
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 2.86E-007 
 Octanol/air (Koa) model: 7.5E-009 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 1.03E-005 
 Mackay model : 2.29E-005 
 Octanol/air (Koa) model: 6E-007 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 3.7244 E-12 cm3/molecule-sec
 Half-Life = 2.872 Days (12-hr day; 1.5E6 OH/cm3)
 Half-Life = 34.462 Hrs
 Ozone Reaction:
 No Ozone Reaction Estimation
 Fraction sorbed to airborne particulates (phi): 1.66E-005 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 1.674
 Log Koc: 0.224 

 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: -0.25 (estimated)

 Volatilization from Water:
 Henry LC: 4.5E-007 atm-m3/mole (estimated by Bond SAR Method)
 Half-Life from Model River: 1585 hours (66.06 days)
 Half-Life from Model Lake : 1.74E+004 hours (724.9 days)

 Removal In Wastewater Treatment:
 Total removal: 1.87 percent
 Total biodegradation: 0.09 percent
 Total sludge adsorption: 1.76 percent
 Total to Air: 0.03 percent
 (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
 Mass Amount Half-Life Emissions
 (percent) (hr) (kg/hr)
 Air 3.44 68.9 1000 
 Water 44.1 360 1000 
 Soil 52.4 720 1000 
 Sediment 0.0811 3.24e+003 0 
 Persistence Time: 402 hr




 

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