This page contains the EPI System Summary only.
For complete control of this information -
Download the free EPI SuiteTM v4.0 program : here
also you can go back to the Datasheet
CAS Number: 1103-39-5
SMILES : c12c(S(=O)(=O)O[Ca])c(N=Nc3c4ccccc4ccc3O)ccc1cccc2
CHEM : 1-Naphthalenesulfonic acid, 2-[(2-hydroxy-1-naphthalenyl)azo]-, calci
um salt (2:1)
MOL FOR: C20 H14 N2 O4 S1 Ca1
MOL WT : 418.48
------------------------------ 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) = 5.52
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 615.74 (Adapted Stein & Brown method)
Melting Pt (deg C): 266.66 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 4.62E-015 (Modified Grain method)
VP (Pa, 25 deg C) : 6.16E-013 (Modified Grain method)
Subcooled liquid VP: 2.07E-012 mm Hg (25 deg C, Mod-Grain method)
: 2.76E-010 Pa (25 deg C, Mod-Grain method)
Water Solubility Estimate from Log Kow (WSKOW v1.42):
Water Solubility at 25 deg C (mg/L): 0.004975
log Kow used: 5.52 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 0.015701 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Hydrazines
Phenols
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : Incomplete
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: 5.113E-013 atm-m3/mole (5.181E-008 Pa-m3/mole)
VP: 4.62E-015 mm Hg (source: MPBPVP)
WS: 0.00498 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Can Not Estimate (can not calculate HenryLC)
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.4223
Biowin2 (Non-Linear Model) : 0.0000
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.0304 (months )
Biowin4 (Primary Survey Model) : 3.2309 (weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : -0.4159
Biowin6 (MITI Non-Linear Model): 0.0000
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): -0.2284
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): 2.76E-010 Pa (2.07E-012 mm Hg)
Log Koa (): not available
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 1.09E+004
Octanol/air (Koa) model: not available
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 1
Mackay model : 1
Octanol/air (Koa) model: not available
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 18.6004 E-12 cm3/molecule-sec
Half-Life = 0.575 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 6.900 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)
not available (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 3.981E+005 L/kg (MCI method)
Log Koc: 5.600 (MCI method)
Koc : 5.466E+004 L/kg (Kow method)
Log Koc: 4.738 (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 = 1.000 (BCF = 10 L/kg wet-wt)
Log Biotransformation Half-life (HL) = 0.3620 days (HL = 2.302 days)
Log BCF Arnot-Gobas method (upper trophic) = 2.940 (BCF = 870.1)
Log BAF Arnot-Gobas method (upper trophic) = 2.976 (BAF = 946.7)
log Kow used: 5.52 (estimated)
Volatilization from Water:
Henry LC: 5.11E-013 atm-m3/mole (calculated from VP/WS)
Half-Life from Model River: 2.342E+009 hours (9.76E+007 days)
Half-Life from Model Lake : 2.555E+010 hours (1.065E+009 days)
Removal In Wastewater Treatment:
Total removal: 88.53 percent
Total biodegradation: 0.75 percent
Total sludge adsorption: 87.78 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 0.0805 13.8 1000
Water 2.74 1.44e+003 1000
Soil 43 2.88e+003 1000
Sediment 54.2 1.3e+004 0
Persistence Time: 4.3e+003 hr