Tetrabromomethane CBr4 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) = 2.80
 Log Kow (Exper. database match) = 3.42
 Exper. Ref: Hansch,C et al. (1995)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 224.32 (Adapted Stein & Brown method)
 Melting Pt (deg C): 34.71 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 0.183 (Modified Grain method)
 MP (exp database): 90.1 deg C
 BP (exp database): 189.5 deg C
 VP (exp database): 2.70E-01 mm Hg at 25 deg C
 Subcooled liquid VP: 1.19 mm Hg (25 deg C, exp database VP )

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
 Water Solubility at 25 deg C (mg/L): 9.588
 log Kow used: 3.42 (expkow database)
 no-melting pt equation used
 Water Sol (Exper. database match) = 240 mg/L (30 deg C)
 Exper. Ref: GROSS,PM & SAYLOR,JH (1931)

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 277.28 mg/L
 Wat Sol (Exper. database match) = 240.00
 Exper. Ref: GROSS,PM & SAYLOR,JH (1931)

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 1.30E-005 atm-m3/mole
 Group Method: Incomplete
 Exper Database: 4.91E-04 atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]: 8.328E-003 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: 3.42 (exp database)
 Log Kaw used: -1.697 (exp database)
 Log Koa (KOAWIN v1.10 estimate): 5.117
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : 0.2211
 Biowin2 (Non-Linear Model) : 0.0000
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 2.3700 (weeks-months)
 Biowin4 (Primary Survey Model) : 3.3574 (days-weeks )
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : 0.1802
 Biowin6 (MITI Non-Linear Model): 0.0001
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): 1.9382
 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): 159 Pa (1.19 mm Hg)
 Log Koa (Koawin est ): 5.117
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 1.89E-008 
 Octanol/air (Koa) model: 3.21E-008 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 6.83E-007 
 Mackay model : 1.51E-006 
 Octanol/air (Koa) model: 2.57E-006 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 0.0000 E-12 cm3/molecule-sec
 Half-Life = -------
 Ozone Reaction:
 No Ozone Reaction Estimation
 Fraction sorbed to airborne particulates (phi): 1.1E-006 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 48.64
 Log Koc: 1.687 

 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 = 1.933 (BCF = 85.78)
 log Kow used: 3.42 (expkow database)

 Volatilization from Water:
 Henry LC: 0.000491 atm-m3/mole (Henry experimental database)
 Half-Life from Model River: 4.03 hours
 Half-Life from Model Lake : 196.7 hours (8.194 days)

 Removal In Wastewater Treatment:
 Total removal: 26.42 percent
 Total biodegradation: 0.15 percent
 Total sludge adsorption: 10.23 percent
 Total to Air: 16.05 percent
 (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
 Mass Amount Half-Life Emissions
 (percent) (hr) (kg/hr)
 Air 6.29 1e+005 1000 
 Water 11.7 900 1000 
 Soil 81.3 1.8e+003 1000 
 Sediment 0.7 8.1e+003 0 
 Persistence Time: 870 hr