1,4-Dithiane C4H8S2 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) = 1.38

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 169.92 (Adapted Stein & Brown method)
 Melting Pt (deg C): 6.88 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 0.0467 (Modified Grain method)
 MP (exp database): 112.3 deg C
 BP (exp database): 199.5 deg C
 Subcooled liquid VP: 0.338 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): 6584
 log Kow used: 1.38 (estimated)
 no-melting pt equation used

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 6417.4 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 4.91E-006 atm-m3/mole
 Group Method: 5.87E-007 atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]: 1.122E-006 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: 1.38 (KowWin est)
 Log Kaw used: -3.697 (HenryWin est)
 Log Koa (KOAWIN v1.10 estimate): 5.077
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : 0.6903
 Biowin2 (Non-Linear Model) : 0.7861
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 2.9335 (weeks )
 Biowin4 (Primary Survey Model) : 3.6743 (days-weeks )
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : 0.4334
 Biowin6 (MITI Non-Linear Model): 0.5002
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): 0.3560
 Ready Biodegradability Prediction: NO

 Hydrocarbon Biodegradation (BioHCwin v1.01):
 LOG BioHC Half-Life (days) : 1.3648
 BioHC Half-Life (days) : 23.1653

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
 Vapor pressure (liquid/subcooled): 45.1 Pa (0.338 mm Hg)
 Log Koa (Koawin est ): 5.077
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 6.66E-008 
 Octanol/air (Koa) model: 2.93E-008 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 2.4E-006 
 Mackay model : 5.33E-006 
 Octanol/air (Koa) model: 2.34E-006 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 39.2432 E-12 cm3/molecule-sec
 Half-Life = 0.273 Days (12-hr day; 1.5E6 OH/cm3)
 Half-Life = 3.271 Hrs
 Ozone Reaction:
 No Ozone Reaction Estimation
 Reaction With Nitrate Radicals May Be Important!
 Fraction sorbed to airborne particulates (phi): 3.86E-006 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 165.5
 Log Koc: 2.219 

 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 = 0.366 (BCF = 2.323)
 log Kow used: 1.38 (estimated)

 Volatilization from Water:
 Henry LC: 5.87E-007 atm-m3/mole (estimated by Group SAR Method)
 Half-Life from Model River: 1095 hours (45.62 days)
 Half-Life from Model Lake : 1.203E+004 hours (501.5 days)

 Removal In Wastewater Treatment:
 Total removal: 1.98 percent
 Total biodegradation: 0.09 percent
 Total sludge adsorption: 1.85 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 0.769 6.54 1000 
 Water 39.5 360 1000 
 Soil 59.6 720 1000 
 Sediment 0.0887 3.24e+003 0 
 Persistence Time: 381 hr