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CAS Number: 529-69-1
SMILES : O=C(NC(NC(=N1)N)=C2C1(=O))C=N2
CHEM : 2-Amino-4,7(1H,8H)-pteridinedione
MOL FOR: C6 H5 N5 O2
MOL WT : 179.14
------------------------------ EPI SUMMARY (v4.10) --------------------------
Physical Property Inputs:
Log Kow (octanol-water): ------
Boiling Point (deg C) : ------
Melting Point (deg C) : ------
Vapor Pressure (mm Hg) : ------
Water Solubility (mg/L): ------
Henry LC (atm-m3/mole) : ------
Log Octanol-Water Partition Coef (SRC):
Log Kow (KOWWIN v1.68 estimate) = -2.87
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 512.67 (Adapted Stein & Brown method)
Melting Pt (deg C): 218.52 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 1.13E-010 (Modified Grain method)
VP (Pa, 25 deg C) : 1.5E-008 (Modified Grain method)
Subcooled liquid VP: 1.31E-008 mm Hg (25 deg C, Mod-Grain method)
: 1.75E-006 Pa (25 deg C, Mod-Grain method)
Water Solubility Estimate from Log Kow (WSKOW v1.42):
Water Solubility at 25 deg C (mg/L): 7.736e+005
log Kow used: -2.87 (estimated)
no-melting pt equation used
Water Sol (Exper. database match) = 5 mg/L (20 deg C)
Exper. Ref: BEILSTEIN
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 1e+006 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Amides
Vinyl/Allyl Amines
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 3.87E-013 atm-m3/mole (3.93E-008 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: 3.443E-017 atm-m3/mole (3.489E-012 Pa-m3/mole)
VP: 1.13E-010 mm Hg (source: MPBPVP)
WS: 7.74E+005 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: -2.87 (KowWin est)
Log Kaw used: -10.801 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 7.931
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.8724
Biowin2 (Non-Linear Model) : 0.9592
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.7491 (weeks-months)
Biowin4 (Primary Survey Model) : 3.7947 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.3183
Biowin6 (MITI Non-Linear Model): 0.1313
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.3077
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): 1.75E-006 Pa (1.31E-008 mm Hg)
Log Koa (Koawin est ): 7.931
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 1.72
Octanol/air (Koa) model: 2.09E-005
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 0.984
Mackay model : 0.993
Octanol/air (Koa) model: 0.00167
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 99.2710 E-12 cm3/molecule-sec
Half-Life = 0.108 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 1.293 Hrs
Ozone Reaction:
OVERALL Ozone Rate Constant = 0.175000 E-17 cm3/molecule-sec
Half-Life = 6.549 Days (at 7E11 mol/cm3)
Fraction sorbed to airborne particulates (phi):
0.988 (Junge-Pankow, Mackay avg)
0.00167 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 86.06 L/kg (MCI method)
Log Koc: 1.935 (MCI method)
Koc : 0.1765 L/kg (Kow method)
Log Koc: -0.753 (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) = -2.8143 days (HL = 0.001533 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: -2.87 (estimated)
Volatilization from Water:
Henry LC: 3.87E-013 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 2.025E+009 hours (8.437E+007 days)
Half-Life from Model Lake : 2.209E+010 hours (9.204E+008 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 0.000328 2.54 1000
Water 18 900 1000
Soil 81.8 1.8e+003 1000
Sediment 0.109 8.1e+003 0
Persistence Time: 1.57e+003 hr