Dibromoacetylene C2Br2 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) = 1.30

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 147.32 (Adapted Stein & Brown method)
 Melting Pt (deg C): 18.60 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 5.78 (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
 Water Solubility at 25 deg C (mg/L): 4131
 log Kow used: 1.30 (estimated)
 no-melting pt equation used

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 6458.3 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
 Class(es) found:
 Vinyl/Allyl Halides

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 2.45E-003 atm-m3/mole
 Group Method: Incomplete
 Henrys LC [VP/WSol estimate using EPI values]: 3.384E-004 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: 1.30 (KowWin est)
 Log Kaw used: -0.999 (HenryWin est)
 Log Koa (KOAWIN v1.10 estimate): 2.299
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : 0.5677
 Biowin2 (Non-Linear Model) : 0.0002
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 2.8508 (weeks )
 Biowin4 (Primary Survey Model) : 3.6533 (days-weeks )
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : 0.3587
 Biowin6 (MITI Non-Linear Model): 0.0200
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): 1.5542
 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): 708 Pa (5.31 mm Hg)
 Log Koa (Koawin est ): 2.299
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 4.24E-009 
 Octanol/air (Koa) model: 4.89E-011 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 1.53E-007 
 Mackay model : 3.39E-007 
 Octanol/air (Koa) model: 3.91E-009 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 1.8252 E-12 cm3/molecule-sec
 Half-Life = 5.860 Days (12-hr day; 1.5E6 OH/cm3)
 Half-Life = 70.322 Hrs
 Ozone Reaction:
 OVERALL Ozone Rate Constant = 0.000059 E-17 cm3/molecule-sec
 Half-Life = 19489.773 Days (at 7E11 mol/cm3)
 Fraction sorbed to airborne particulates (phi): 2.46E-007 (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 = 0.297 (BCF = 1.983)
 log Kow used: 1.30 (estimated)

 Volatilization from Water:
 Henry LC: 0.00245 atm-m3/mole (estimated by Bond SAR Method)
 Half-Life from Model River: 1.708 hours
 Half-Life from Model Lake : 132.3 hours (5.513 days)

 Removal In Wastewater Treatment:
 Total removal: 50.26 percent
 Total biodegradation: 0.06 percent
 Total sludge adsorption: 1.07 percent
 Total to Air: 49.14 percent
 (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
 Mass Amount Half-Life Emissions
 (percent) (hr) (kg/hr)
 Air 39.2 141 1000 
 Water 48.9 360 1000 
 Soil 11.8 720 1000 
 Sediment 0.106 3.24e+003 0 
 Persistence Time: 135 hr