Diselanediide Se2 structure

Se2 structure
Molecular Formula Se2
Average mass 157.921 Da
Density
Boiling Point
Flash Point
Molar Refractivity
Polarizability
Surface Tension
Molar Volume

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

Density:
Boiling Point:
Vapour Pressure:
Enthalpy of Vaporization:
Flash Point:
Index of Refraction:
Molar Refractivity:
#H bond acceptors: 0
#H bond donors: 0
#Freely Rotating Bonds: 1
#Rule of 5 Violations: 0
ACD/LogP: 1.40
ACD/LogD (pH 5.5):
ACD/BCF (pH 5.5):
ACD/KOC (pH 5.5):
ACD/LogD (pH 7.4):
ACD/BCF (pH 7.4):
ACD/KOC (pH 7.4):
Polar Surface Area: 0 Å2
Polarizability:
Surface Tension:
Molar Volume:

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): 528.07 (Adapted Stein & Brown method)
Melting Pt (deg C): 223.61 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 3.97E-011 (Modified Grain method)
Subcooled liquid VP: 5.31E-009 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): 4.197e+004
log Kow used: 0.25 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 2.839e+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 : Incomplete
Group Method: Incomplete
Henrys LC [VP/WSol estimate using EPI values]: 1.991E-016 atm-m3/mole
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Can Not Estimate (can not calculate HenryLC)
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.6714
Biowin2 (Non-Linear Model) : 0.6765
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.8457 (weeks )
Biowin4 (Primary Survey Model) : 3.6170 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.2363
Biowin6 (MITI Non-Linear Model): 0.1099
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.8361
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): 7.08E-007 Pa (5.31E-009 mm Hg)
Log Koa (): not available
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 4.24 
Octanol/air (Koa) model: not available
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 0.994 
Mackay model : 0.997 
Octanol/air (Koa) model: not available
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 130.0000 E-12 cm3/molecule-sec
Half-Life = 0.082 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 0.987 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi): 0.995 (Junge,Mackay)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (PCKOCWIN v1.66):
Koc : 14.3
Log Koc: 1.155 
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: 1.99E-016 atm-m3/mole (calculated from VP/WS)
Half-Life from Model River: 3.72E+012 hours (1.55E+011 days)
Half-Life from Model Lake : 4.058E+013 hours (1.691E+012 days)
Removal In Wastewater Treatment:
Total removal: 1.85 percent
Total biodegradation: 0.09 percent
Total sludge adsorption: 1.76 percent
Total to Air: 0.00 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 1.15e-006 1.97 1000 
Water 38.1 360 1000 
Soil 61.9 720 1000 
Sediment 0.0708 3.24e+003 0 
Persistence Time: 585 hr

Click to predict properties on the Chemicalize site

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