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 Num: 007772-98-7
SMILES : S(=S)(=O)(O[Na])O[Na]
CHEM : Thiosulfuric acid, disodium salt
MOL FOR: O3 S2 Na2
MOL WT : 158.10
------------------------------ 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):
*** WARNING: Inorganic Compound (Outside Estimation Domain)
Log Kow (KOWWIN v1.67 estimate) = -4.53
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
*** WARNING: Inorganic Compound (Outside Estimate Domain) ***
*** WARNING: Estimations NOT VALID ***
Boiling Pt (deg C): 777.54 (Adapted Stein & Brown method)
Melting Pt (deg C): 342.24 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 3.29E-019 (Modified Grain method)
VP (Pa, 25 deg C) : 4.38E-017 (Modified Grain method)
Subcooled liquid VP: 1.34E-015 mm Hg (25 deg C, Mod-Grain method)
: 1.79E-013 Pa (25 deg C, Mod-Grain method)
Water Solubility Estimate from Log Kow (WSKOW v1.41):
*** WARNING: Inorganic Compound (Outside Estimation Domain)**
Water Solubility at 25 deg C (mg/L): 1e+006
log Kow used: -4.53 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
*** WARNING: Inorganic Compound (Outside Estimation Domain)***
*** WARNING: Wat Sol Estimation NOT Valid ***
Wat Sol (v1.01 est) = 11302 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Neutral Organics
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
*** WARNING: Inorganic Compound (Outside Estimation Domain) **
*** WARNING: Estimation NOT VALID **
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: 6.844E-026 atm-m3/mole (6.935E-021 Pa-m3/mole)
VP: 3.29E-019 mm Hg (source: MPBPVP)
WS: 1E+006 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):
*** WARNING: Inorganic Compound (Outside Estimation Domain)**
*** WARNING: Estimation NOT VALID ***
Biowin1 (Linear Model) : 0.6932
Biowin2 (Non-Linear Model) : 0.8003
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.9469 (weeks )
Biowin4 (Primary Survey Model) : 3.6831 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.3726
Biowin6 (MITI Non-Linear Model): 0.3166
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.8361
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): 1.79E-013 Pa (1.34E-015 mm Hg)
Log Koa (): not available
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 1.68E+007
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]:
*** WARNING: Inorganic Compound (Outside Estimation Domain)***
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 0.0000 E-12 cm3/molecule-sec
Half-Life = -------
Ozone Reaction:
No Ozone Reaction Estimation
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):
*** WARNING: Inorganic Coumpound (Outside Estimation Domain) **
*** WARNING: Estimation NOT VALID **
Koc : 2.21 L/kg (MCI method)
Log Koc: 0.344 (MCI method)
Koc : 0.03809 L/kg (Kow method)
Log Koc: -1.419 (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) = -2.6546 days (HL = 0.002215 days)
Log BCF Arnot-Gobas method (upper trophic) = -0.049 (BCF = 0.8931)
Log BAF Arnot-Gobas method (upper trophic) = -0.049 (BAF = 0.8931)
log Kow used: -2.32 (estimated)
Volatilization from Water:
Henry LC: 6.84E-026 atm-m3/mole (calculated from VP/WS)
Half-Life from Model River: 1.076E+022 hours (4.482E+020 days)
Half-Life from Model Lake : 1.173E+023 hours (4.889E+021 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 3.12e-009 1e+005 1000
Water 36.4 360 1000
Soil 63.5 720 1000
Sediment 0.07 3.24e+003 0
Persistence Time: 597 hr