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CAS Number: 5834-16-2

SMILES : s1c(C(=O))c(C)cc1

CHEM : 3-methylthiophene-2-carbaldehyde

MOL FOR: C6 H6 O1 S1

MOL WT : 126.17

------------------------------ EPI SUMMARY (v4.00) --------------------------

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 v1.67 estimate) = 2.08

Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):

Boiling Pt (deg C): 211.17 (Adapted Stein & Brown method)

Melting Pt (deg C): 27.51 (Mean or Weighted MP)

VP(mm Hg,25 deg C): 0.18 (Modified Grain method)

VP (Pa, 25 deg C) : 24 (Modified Grain method)

Subcooled liquid VP: 0.19 mm Hg (25 deg C, Mod-Grain method)

: 25.3 Pa (25 deg C, Mod-Grain method)

Water Solubility Estimate from Log Kow (WSKOW v1.41):

Water Solubility at 25 deg C (mg/L): 1600

log Kow used: 2.08 (estimated)

no-melting pt equation used

Water Sol Estimate from Fragments:

Wat Sol (v1.01 est) = 4541.7 mg/L

ECOSAR Class Program (ECOSAR v1.00):

Class(es) found:

Aldehydes (Mono)

Thiophenes

Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:

Bond Method : 8.05E-006 atm-m3/mole (8.16E-001 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: 1.868E-005 atm-m3/mole (1.892E+000 Pa-m3/mole)

VP: 0.18 mm Hg (source: MPBPVP)

WS: 1.6E+003 mg/L (source: WSKOWWIN)

Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:

Log Kow used: 2.08 (KowWin est)

Log Kaw used: -3.483 (HenryWin est)

Log Koa (KOAWIN v1.10 estimate): 5.563

Log Koa (experimental database): None

Probability of Rapid Biodegradation (BIOWIN v4.10):

Biowin1 (Linear Model) : 1.0268

Biowin2 (Non-Linear Model) : 0.9999

Expert Survey Biodegradation Results:

Biowin3 (Ultimate Survey Model): 2.8678 (weeks )

Biowin4 (Primary Survey Model) : 3.7938 (days )

MITI Biodegradation Probability:

Biowin5 (MITI Linear Model) : 0.8061

Biowin6 (MITI Non-Linear Model): 0.8979

Anaerobic Biodegradation Probability:

Biowin7 (Anaerobic Linear Model): 0.3960

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): 25.3 Pa (0.19 mm Hg)

Log Koa (Koawin est ): 5.563

Kp (particle/gas partition coef. (m3/ug)):

Mackay model : 1.18E-007

Octanol/air (Koa) model: 8.97E-008

Fraction sorbed to airborne particulates (phi):

Junge-Pankow model : 4.28E-006

Mackay model : 9.47E-006

Octanol/air (Koa) model: 7.18E-006

Atmospheric Oxidation (25 deg C) [AopWin v1.92]:

Hydroxyl Radicals Reaction:

OVERALL OH Rate Constant = 25.2068 E-12 cm3/molecule-sec

Half-Life = 0.424 Days (12-hr day; 1.5E6 OH/cm3)

Half-Life = 5.092 Hrs

Ozone Reaction:

No Ozone Reaction Estimation

Fraction sorbed to airborne particulates (phi):

6.88E-006 (Junge-Pankow, Mackay avg)

7.18E-006 (Koa method)

Note: the sorbed fraction may be resistant to atmospheric oxidation

Soil Adsorption Coefficient (KOCWIN v2.00):

Koc : 9.96 L/kg (MCI method)

Log Koc: 0.998 (MCI method)

Koc : 70.2 L/kg (Kow method)

Log Koc: 1.846 (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 = 1.038 (BCF = 10.91 L/kg wet-wt)

Log Biotransformation Half-life (HL) = -0.7090 days (HL = 0.1954 days)

Log BCF Arnot-Gobas method (upper trophic) = 1.037 (BCF = 10.88)

Log BAF Arnot-Gobas method (upper trophic) = 1.037 (BAF = 10.88)

log Kow used: 2.08 (estimated)

Volatilization from Water:

Henry LC: 8.05E-006 atm-m3/mole (estimated by Bond SAR Method)

Half-Life from Model River: 82.84 hours (3.452 days)

Half-Life from Model Lake : 997.9 hours (41.58 days)

Removal In Wastewater Treatment:

Total removal: 2.77 percent

Total biodegradation: 0.10 percent

Total sludge adsorption: 2.22 percent

Total to Air: 0.45 percent

(using 10000 hr Bio P,A,S)

Level III Fugacity Model:

Mass Amount Half-Life Emissions

(percent) (hr) (kg/hr)

Air 1.32 10.2 1000

Water 39.9 360 1000

Soil 58.6 720 1000

Sediment 0.0899 3.24e+003 0

Persistence Time: 362 hr

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