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CAS Number: 409-21-2

SMILES : [Si]C

CHEM : Silicon carbide (SiC)

MOL FOR: C1 H6 Si1

MOL WT : 46.14

------------------------------ EPI SUMMARY (v4.11) --------------------------

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) = 1.08

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

Boiling Pt (deg C): -31.36 (Adapted Stein & Brown method)

Melting Pt (deg C): -150.29 (Mean or Weighted MP)

VP(mm Hg,25 deg C): 9.93E+003 (Mean VP of Antoine & Grain methods)

VP (Pa, 25 deg C) : 1.32E+006 (Mean VP of Antoine & Grain methods)

MP (exp database): -156.5 deg C

BP (exp database): -57.5 deg C

Water Solubility Estimate from Log Kow (WSKOW v1.42):

Water Solubility at 25 deg C (mg/L): 1.602e+004

log Kow used: 1.08 (estimated)

no-melting pt equation used

Water Sol Estimate from Fragments:

Wat Sol (v1.01 est) = 161.09 mg/L

ECOSAR Class Program (ECOSAR v1.11):

Class(es) found:

Neutral Organics

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

Bond Method : 8.46E-002 atm-m3/mole (8.57E+003 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: 2.880E-003 atm-m3/mole (2.918E+002 Pa-m3/mole)

VP: 9.93E+003 mm Hg (source: MPBPVP)

WS: 1.6E+004 mg/L (source: WSKOWWIN)

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

Log Kow used: 1.08 (KowWin est)

Log Kaw used: 0.539 (HenryWin est)

Log Koa (KOAWIN v1.10 estimate): 0.541

Log Koa (experimental database): None

Probability of Rapid Biodegradation (BIOWIN v4.10):

Biowin1 (Linear Model) : 0.7256

Biowin2 (Non-Linear Model) : 0.9132

Expert Survey Biodegradation Results:

Biowin3 (Ultimate Survey Model): 3.0972 (weeks )

Biowin4 (Primary Survey Model) : 3.7812 (days )

MITI Biodegradation Probability:

Biowin5 (MITI Linear Model) : 0.5753

Biowin6 (MITI Non-Linear Model): 0.7708

Anaerobic Biodegradation Probability:

Biowin7 (Anaerobic Linear Model): 0.7565

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): 8.75E+005 Pa (6.56E+003 mm Hg)

Log Koa (Koawin est ): 0.541

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

Mackay model : 3.43E-012

Octanol/air (Koa) model: 8.53E-013

Fraction sorbed to airborne particulates (phi):

Junge-Pankow model : 1.24E-010

Mackay model : 2.74E-010

Octanol/air (Koa) model: 6.82E-011

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

Hydroxyl Radicals Reaction:

OVERALL OH Rate Constant = 0.1496 E-12 cm3/molecule-sec

Half-Life = 71.497 Days (12-hr day; 1.5E6 OH/cm3)

Ozone Reaction:

No Ozone Reaction Estimation

Fraction sorbed to airborne particulates (phi):

1.99E-010 (Junge-Pankow, Mackay avg)

6.82E-011 (Koa method)

Note: the sorbed fraction may be resistant to atmospheric oxidation

Soil Adsorption Coefficient (KOCWIN v2.00):

Koc : 13.22 L/kg (MCI method)

Log Koc: 1.121 (MCI method)

Koc : 8.648 L/kg (Kow method)

Log Koc: 0.937 (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 = 0.377 (BCF = 2.385 L/kg wet-wt)

Log Biotransformation Half-life (HL) = -1.0794 days (HL = 0.0833 days)

Log BCF Arnot-Gobas method (upper trophic) = 0.267 (BCF = 1.848)

Log BAF Arnot-Gobas method (upper trophic) = 0.267 (BAF = 1.848)

log Kow used: 1.08 (estimated)

Volatilization from Water:

Henry LC: 0.0846 atm-m3/mole (estimated by Bond SAR Method)

Half-Life from Model River: 0.6978 hours (41.87 min)

Half-Life from Model Lake : 64.57 hours (2.69 days)

Removal In Wastewater Treatment (recommended maximum 95%):

Total removal: 97.04 percent

Total biodegradation: 0.02 percent

Total sludge adsorption: 0.32 percent

Total to Air: 96.70 percent

(using 10000 hr Bio P,A,S)

Level III Fugacity Model:

Mass Amount Half-Life Emissions

(percent) (hr) (kg/hr)

Air 55.5 1.72e+003 1000

Water 43.5 360 1000

Soil 0.893 720 1000

Sediment 0.104 3.24e+003 0

Persistence Time: 142 hr

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