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CAS Num: 002783-94-0
SMILES : Oc2ccc1cc(ccc1c2N=Nc3ccc(cc3)S(O[Na])(=O)=O)S(O[Na])(=O)=O
CHEM : 2-Naphthalenesulfonic acid, 6-hydroxy-5-[(4-sulfophenyl)azo]-, disodi
um salt
MOL FOR: C16 H10 N2 O7 S2 Na2
MOL WT : 452.37
------------------------------ 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) = -1.18
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
Boiling Pt (deg C): 836.60 (Adapted Stein & Brown method)
Melting Pt (deg C): 349.84 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 1.43E-022 (Modified Grain method)
VP (Pa, 25 deg C) : 1.9E-020 (Modified Grain method)
Subcooled liquid VP: 7.31E-019 mm Hg (25 deg C, Mod-Grain method)
: 9.75E-017 Pa (25 deg C, Mod-Grain method)
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 2.049e+004
log Kow used: -1.18 (estimated)
no-melting pt equation used
Water Sol (Exper. database match) = 1.9e+005 mg/L (25 deg C)
Exper. Ref: MARMION,DL (1993)
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 0.11471 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Hydrazines
Phenols
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 3.29E-023 atm-m3/mole (3.33E-018 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: 4.154E-027 atm-m3/mole (4.209E-022 Pa-m3/mole)
VP: 1.43E-022 mm Hg (source: MPBPVP)
WS: 2.05E+004 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: -1.18 (KowWin est)
Log Kaw used: -20.871 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 19.691
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : -0.0204
Biowin2 (Non-Linear Model) : 0.0000
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.3371 (weeks-months)
Biowin4 (Primary Survey Model) : 3.2887 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : -0.3663
Biowin6 (MITI Non-Linear Model): 0.0000
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): -0.6957
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): 9.75E-017 Pa (7.31E-019 mm Hg)
Log Koa (Koawin est ): 19.691
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 3.08E+010
Octanol/air (Koa) model: 1.21E+007
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 1
Mackay model : 1
Octanol/air (Koa) model: 1
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 4.0204 E-12 cm3/molecule-sec
Half-Life = 2.660 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 31.925 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Reaction With Nitrate Radicals May Be Important!
Fraction sorbed to airborne particulates (phi):
1 (Junge-Pankow, Mackay avg)
1 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 2.511E+004 L/kg (MCI method)
Log Koc: 4.400 (MCI method)
Koc : 7.418 L/kg (Kow method)
Log Koc: 0.870 (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) = -1.3309 days (HL = 0.04668 days)
Log BCF Arnot-Gobas method (upper trophic) = 0.399 (BCF = 2.507)
Log BAF Arnot-Gobas method (upper trophic) = 0.399 (BAF = 2.507)
log Kow used: 1.40 (estimated)
Volatilization from Water:
Henry LC: 3.29E-023 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 3.785E+019 hours (1.577E+018 days)
Half-Life from Model Lake : 4.129E+020 hours (1.72E+019 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 0.000819 63.8 1000
Water 9.07 900 1000
Soil 77.9 1.8e+003 1000
Sediment 13 8.1e+003 0
Persistence Time: 2.11e+003 hr