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CAS Number: 78491-02-8
SMILES : O=C(NCO)N(C1N(C(=O)N(C1(=O))CO)CO)CO
CHEM : Urea, N-[1,3-bis(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl]-N,N -bis(
hydroxymethyl)-
MOL FOR: C8 H14 N4 O7
MOL WT : 278.22
------------------------------ EPI SUMMARY (v4.10) --------------------------
Henry LC (atm-m3/mole) : ------
Log Kow (octanol-water): ------
Boiling Point (deg C) : ------
Water Solubility (mg/L): ------
Physical Property Inputs:
Vapor Pressure (mm Hg) : ------
Melting Point (deg C) : ------
Log Octanol-Water Partition Coef (SRC):
Log Kow (KOWWIN v1.68 estimate) = -7.49
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 611.33 (Adapted Stein & Brown method)
Melting Pt (deg C): 264.60 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 8.46E-018 (Modified Grain method)
VP (Pa, 25 deg C) : 1.13E-015 (Modified Grain method)
Subcooled liquid VP: 3.58E-015 mm Hg (25 deg C, Mod-Grain method)
: 4.77E-013 Pa (25 deg C, Mod-Grain method)
Water Solubility Estimate from Log Kow (WSKOW v1.42):
Water Solubility at 25 deg C (mg/L): 1e+006
log Kow used: -7.49 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 1e+006 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Imides
Substituted Ureas
Amides
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 2.24E-020 atm-m3/mole (2.27E-015 Pa-m3/mole)
Group Method: Incomplete
For Henry LC Comparison Purposes:
User-Entered Henry LC: not entered
Henrys LC [via VP/WSol estimate using User-Entered or Estimated values]:
HLC: 3.097E-024 atm-m3/mole (3.138E-019 Pa-m3/mole)
VP: 8.46E-018 mm Hg (source: MPBPVP)
WS: 1E+006 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: -7.49 (KowWin est)
Log Kaw used: -18.038 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 10.548
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 1.2500
Biowin2 (Non-Linear Model) : 0.9715
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.2242 (weeks )
Biowin4 (Primary Survey Model) : 3.9641 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.7391
Biowin6 (MITI Non-Linear Model): 0.5247
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 1.5105
Ready Biodegradability Prediction: YES
Hydrocarbon Biodegradation (BioHCwin v1.01):
Structure incompatible with current estimation method!
Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
Vapor pressure (liquid/subcooled): 4.77E-013 Pa (3.58E-015 mm Hg)
Log Koa (Koawin est ): 10.548
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 6.28E+006
Octanol/air (Koa) model: 0.00867
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 1
Mackay model : 1
Octanol/air (Koa) model: 0.41
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 73.8251 E-12 cm3/molecule-sec
Half-Life = 0.145 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 1.739 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
1 (Junge-Pankow, Mackay avg)
0.41 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 10 L/kg (MCI method)
Log Koc: 1.000 (MCI method)
Koc : 6.372E-005 L/kg (Kow method)
Log Koc: -4.196 (Kow method)
Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
Rate constants can NOT be estimated for this structure!
Bioaccumulation Estimates (BCFBAF v3.01):
Log BCF from regression-based method = 0.500 (BCF = 3.162 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -7.1997 days (HL = 6.313e-008 days)
Log BCF Arnot-Gobas method (upper trophic) = -0.049 (BCF = 0.893)
Log BAF Arnot-Gobas method (upper trophic) = -0.049 (BAF = 0.893)
log Kow used: -7.49 (estimated)
Volatilization from Water:
Henry LC: 2.24E-020 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 4.36E+016 hours (1.817E+015 days)
Half-Life from Model Lake : 4.756E+017 hours (1.982E+016 days)
Removal In Wastewater Treatment:
Total removal: 1.85 percent
Total biodegradation: 0.09 percent
Total sludge adsorption: 1.75 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 0.000217 3.48 1000
Water 30.6 360 1000
Soil 69.4 720 1000
Sediment 0.0688 3.24e+003 0
Persistence Time: 640 hr