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CAS Number: 126-97-6
SMILES : C(C(=O)ON(H)(H)(H)CCO)S
CHEM : Acetic acid, mercapto-, compd. with 2-aminoethanol (1:1)
MOL FOR: C4 H11 N1 O3 S1
MOL WT : 153.20
------------------------------ 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) = -3.27
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 421.50 (Adapted Stein & Brown method)
Melting Pt (deg C): 174.22 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 1.22E-009 (Modified Grain method)
VP (Pa, 25 deg C) : 1.63E-007 (Modified Grain method)
Subcooled liquid VP: 4.3E-008 mm Hg (25 deg C, Mod-Grain method)
: 5.73E-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): 1e+006
log Kow used: -3.27 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 3.0895e+005 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Thiols and Mercaptans
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 8.21E-021 atm-m3/mole (8.32E-016 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: 2.459E-016 atm-m3/mole (2.492E-011 Pa-m3/mole)
VP: 1.22E-009 mm Hg (source: MPBPVP)
WS: 1E+006 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: -3.27 (KowWin est)
Log Kaw used: -18.474 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 15.204
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.8333
Biowin2 (Non-Linear Model) : 0.8756
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.0206 (weeks )
Biowin4 (Primary Survey Model) : 3.7562 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.5565
Biowin6 (MITI Non-Linear Model): 0.6572
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.6091
Ready Biodegradability Prediction: YES
Hydrocarbon Biodegradation (BioHCwin v1.01):
Structure incompatible with current estimation method!
Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
Vapor pressure (liquid/subcooled): 5.73E-006 Pa (4.3E-008 mm Hg)
Log Koa (Koawin est ): 15.204
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 0.523
Octanol/air (Koa) model: 393
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 0.95
Mackay model : 0.977
Octanol/air (Koa) model: 1
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 49.6033 E-12 cm3/molecule-sec
Half-Life = 0.216 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 2.588 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
0.963 (Junge-Pankow, Mackay avg)
1 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 1 L/kg (MCI method)
Log Koc: 0.000 (MCI method)
Koc : 0.02844 L/kg (Kow method)
Log Koc: -1.546 (Kow method)
Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
Total Kb for pH > 8 at 25 deg C : 6.449E+001 L/mol-sec
Kb Half-Life at pH 8: 2.985 hours
Kb Half-Life at pH 7: 1.244 days
(Total Kb applies only to esters, carbmates, alkyl halides)
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) = -2.9244 days (HL = 0.00119 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: -3.27 (estimated)
Volatilization from Water:
Henry LC: 8.21E-021 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 8.827E+016 hours (3.678E+015 days)
Half-Life from Model Lake : 9.629E+017 hours (4.012E+016 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 4.9e-012 5.17 1000
Water 37.7 360 1000
Soil 62.2 720 1000
Sediment 0.0706 3.24e+003 0
Persistence Time: 587 hr