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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