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CAS Number: 75-68-3

SMILES : FC(F)(CL)C

CHEM : Ethane, 1-chloro-1,1-difluoro-

MOL FOR: C2 H3 CL1 F2

MOL WT : 100.50

------------------------------ 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) = 2.05

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

Boiling Pt (deg C): -13.75 (Adapted Stein & Brown method)

Melting Pt (deg C): -124.52 (Mean or Weighted MP)

VP(mm Hg,25 deg C): 2.58E+003 (Mean VP of Antoine & Grain methods)

VP (Pa, 25 deg C) : 3.43E+005 (Mean VP of Antoine & Grain methods)

MP (exp database): -130.8 deg C

BP (exp database): -9.7 deg C

VP (exp database): 2.54E+03 mm Hg (3.39E+005 Pa) at 25 deg C

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

Water Solubility at 25 deg C (mg/L): 372.9

log Kow used: 2.05 (estimated)

no-melting pt equation used

Water Sol (Exper. database match) = 1400 mg/L (25 deg C)

Exper. Ref: CHANG,WK & CRIDDLE,CS (1995)

Water Sol Estimate from Fragments:

Wat Sol (v1.01 est) = 1884.8 mg/L

ECOSAR Class Program (ECOSAR v1.00):

Class(es) found:

Neutral Organics

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

Bond Method : 1.36E-001 atm-m3/mole (1.38E+004 Pa-m3/mole)

Group Method: Incomplete

Exper Database: 5.88E-02 atm-m3/mole (5.96E+003 Pa-m3/mole)

For Henry LC Comparison Purposes:

User-Entered Henry LC: not entered

Henrys LC [via VP/WSol estimate using User-Entered or Estimated values]:

HLC: 2.695E-001 atm-m3/mole (2.731E+004 Pa-m3/mole)

VP: 2.58E+003 mm Hg (source: MPBPVP)

WS: 373 mg/L (source: WSKOWWIN)

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

Log Kow used: 2.05 (KowWin est)

Log Kaw used: 0.381 (exp database)

Log Koa (KOAWIN v1.10 estimate): 1.669

Log Koa (experimental database): None

Probability of Rapid Biodegradation (BIOWIN v4.10):

Biowin1 (Linear Model) : 0.4044

Biowin2 (Non-Linear Model) : 0.1198

Expert Survey Biodegradation Results:

Biowin3 (Ultimate Survey Model): 2.5918 (weeks-months)

Biowin4 (Primary Survey Model) : 3.4487 (days-weeks )

MITI Biodegradation Probability:

Biowin5 (MITI Linear Model) : 0.5170

Biowin6 (MITI Non-Linear Model): 0.0002

Anaerobic Biodegradation Probability:

Biowin7 (Anaerobic Linear Model): 0.4076

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): 3.39E+005 Pa (2.54E+003 mm Hg)

Log Koa (Koawin est ): 1.669

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

Mackay model : 8.86E-012

Octanol/air (Koa) model: 1.15E-011

Fraction sorbed to airborne particulates (phi):

Junge-Pankow model : 3.2E-010

Mackay model : 7.09E-010

Octanol/air (Koa) model: 9.16E-010

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

Hydroxyl Radicals Reaction:

OVERALL OH Rate Constant = 0.0042 E-12 cm3/molecule-sec

Half-Life = 2536.999 Days (12-hr day; 1.5E6 OH/cm3)

Ozone Reaction:

No Ozone Reaction Estimation

Fraction sorbed to airborne particulates (phi):

5.14E-010 (Junge-Pankow, Mackay avg)

9.16E-010 (Koa method)

Note: the sorbed fraction may be resistant to atmospheric oxidation

Soil Adsorption Coefficient (KOCWIN v2.00):

Koc : 43.89 L/kg (MCI method)

Log Koc: 1.642 (MCI method)

Koc : 60.09 L/kg (Kow method)

Log Koc: 1.779 (Kow method)

Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:

Total Kb for pH > 8 at 25 deg C : 2.342E-009 L/mol-sec

Kb Half-Life at pH 8: 9.380E+006 years

Kb Half-Life at pH 7: 9.380E+007 years

(Total Kb applies only to esters, carbmates, alkyl halides)

Bioaccumulation Estimates (BCFBAF v3.01):

Log BCF from regression-based method = 1.021 (BCF = 10.5 L/kg wet-wt)

Log Biotransformation Half-life (HL) = -0.3048 days (HL = 0.4957 days)

Log BCF Arnot-Gobas method (upper trophic) = 1.072 (BCF = 11.79)

Log BAF Arnot-Gobas method (upper trophic) = 1.072 (BAF = 11.79)

log Kow used: 2.05 (estimated)

Volatilization from Water:

Henry LC: 0.0588 atm-m3/mole (Henry experimental database)

Half-Life from Model River: 1.033 hours

Half-Life from Model Lake : 95.33 hours (3.972 days)

Removal In Wastewater Treatment (recommended maximum 95%):

Total removal: 95.80 percent

Total biodegradation: 0.02 percent

Total sludge adsorption: 0.58 percent

Total to Air: 95.20 percent

(using 10000 hr Bio P,A,S)

Level III Fugacity Model:

Mass Amount Half-Life Emissions

(percent) (hr) (kg/hr)

Air 51.4 8.39e+004 1000

Water 46.9 900 1000

Soil 1.53 1.8e+003 1000

Sediment 0.187 8.1e+003 0

Persistence Time: 167 hr

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