2,2,4,6,6-Pentamethyl-1,2,5,6-tetrahydropyrimidine C9H18N2 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) = 3.72

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 213.47 (Adapted Stein & Brown method)
 Melting Pt (deg C): 47.94 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 0.104 (Modified Grain method)
 Subcooled liquid VP: 0.169 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): 48.2
 log Kow used: 3.72 (estimated)
 no-melting pt equation used

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 902.3 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
 Class(es) found:
 Aliphatic Amines

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 8.36E-004 atm-m3/mole
 Group Method: Incomplete
 Henrys LC [VP/WSol estimate using EPI values]: 4.380E-004 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: 3.72 (KowWin est)
 Log Kaw used: -1.466 (HenryWin est)
 Log Koa (KOAWIN v1.10 estimate): 5.186
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : 0.4601
 Biowin2 (Non-Linear Model) : 0.1797
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 2.4585 (weeks-months)
 Biowin4 (Primary Survey Model) : 3.3616 (days-weeks )
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : 0.4435
 Biowin6 (MITI Non-Linear Model): 0.2534
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): -0.1730
 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): 22.5 Pa (0.169 mm Hg)
 Log Koa (Koawin est ): 5.186
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 1.33E-007 
 Octanol/air (Koa) model: 3.77E-008 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 4.81E-006 
 Mackay model : 1.07E-005 
 Octanol/air (Koa) model: 3.01E-006 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 65.2495 E-12 cm3/molecule-sec
 Half-Life = 0.164 Days (12-hr day; 1.5E6 OH/cm3)
 Half-Life = 1.967 Hrs
 Ozone Reaction:
 No Ozone Reaction Estimation
 Fraction sorbed to airborne particulates (phi): 7.73E-006 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 854.4
 Log Koc: 2.932 

 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 = 2.166 (BCF = 146.4)
 log Kow used: 3.72 (estimated)

 Volatilization from Water:
 Henry LC: 0.000836 atm-m3/mole (estimated by Bond SAR Method)
 Half-Life from Model River: 2.137 hours
 Half-Life from Model Lake : 127.5 hours (5.311 days)

 Removal In Wastewater Treatment:
 Total removal: 38.50 percent
 Total biodegradation: 0.19 percent
 Total sludge adsorption: 16.78 percent
 Total to Air: 21.54 percent
 (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
 Mass Amount Half-Life Emissions
 (percent) (hr) (kg/hr)
 Air 0.358 3.93 1000 
 Water 10.9 900 1000 
 Soil 87.4 1.8e+003 1000 
 Sediment 1.33 8.1e+003 0 
 Persistence Time: 835 hr