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CAS Num: 000083-67-0
SMILES : N1C(=O)N(C)c2ncn(C)c2C1(=O)
CHEM : Theobromine
MOL FOR: C7 H8 N4 O2
MOL WT : 180.17
------------------------------ EPI SUMMARY (v4.00) --------------------------
Physical Property Inputs:
Water Solubility (mg/L): ------
Vapor Pressure (mm Hg) : ------
Henry LC (atm-m3/mole) : ------
Log Kow (octanol-water): ------
Boiling Point (deg C) : ------
Melting Point (deg C) : ------
Log Octanol-Water Partition Coef (SRC):
Log Kow (KOWWIN v1.67 estimate) = -0.05
Log Kow (Exper. database match) = -0.78
Exper. Ref: HANSCH,C ET AL. (1995)
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
Boiling Pt (deg C): 483.47 (Adapted Stein & Brown method)
Melting Pt (deg C): 204.88 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 1.13E-011 (Modified Grain method)
VP (Pa, 25 deg C) : 1.5E-009 (Modified Grain method)
MP (exp database): 357 deg C
Subcooled liquid VP: 7.17E-008 mm Hg (25 deg C, Mod-Grain method)
: 9.56E-006 Pa (25 deg C, Mod-Grain method)
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 1.248e+004
log Kow used: -0.78 (expkow database)
no-melting pt equation used
Water Sol (Exper. database match) = 330 mg/L (25 deg C)
Exper. Ref: YALKOWSKY,SH & HE,Y (2003)
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 32619 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Imides
Imidazoles
Amides
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 1.63E-011 atm-m3/mole (1.65E-006 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: 2.147E-016 atm-m3/mole (2.175E-011 Pa-m3/mole)
VP: 1.13E-011 mm Hg (source: MPBPVP)
WS: 1.25E+004 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: -0.78 (exp database)
Log Kaw used: -9.176 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 8.396
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.6618
Biowin2 (Non-Linear Model) : 0.6107
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.8010 (weeks )
Biowin4 (Primary Survey Model) : 3.5878 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.1852
Biowin6 (MITI Non-Linear Model): 0.0747
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.5815
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): 9.56E-006 Pa (7.17E-008 mm Hg)
Log Koa (Koawin est ): 8.396
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 0.314
Octanol/air (Koa) model: 6.11E-005
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 0.919
Mackay model : 0.962
Octanol/air (Koa) model: 0.00486
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 18.8609 E-12 cm3/molecule-sec
Half-Life = 0.567 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 6.805 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
0.94 (Junge-Pankow, Mackay avg)
0.00486 (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 : 4.066 L/kg (Kow method)
Log Koc: 0.609 (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 v3.00):
Log BCF from regression-based method = 0.500 (BCF = 3.162 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -2.0894 days (HL = 0.008139 days)
Log BCF Arnot-Gobas method (upper trophic) = -0.047 (BCF = 0.8974)
Log BAF Arnot-Gobas method (upper trophic) = -0.047 (BAF = 0.8974)
log Kow used: -0.78 (expkow database)
Volatilization from Water:
Henry LC: 1.63E-011 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 4.821E+007 hours (2.009E+006 days)
Half-Life from Model Lake : 5.26E+008 hours (2.192E+007 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 0.289 13.6 1000
Water 32.2 360 1000
Soil 67.4 720 1000
Sediment 0.0726 3.24e+003 0
Persistence Time: 566 hr