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CAS Number: 811-97-2
SMILES : FCC(F)(F)F
CHEM : 1,1,1,2-Tetrafluoroethane
MOL FOR: C2 H2 F4
MOL WT : 102.03
------------------------------ 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) = 1.68
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): -53.60 (Adapted Stein & Brown method)
Melting Pt (deg C): -150.52 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 3.98E+003 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 5.31E+005 (Mean VP of Antoine & Grain methods)
MP (exp database): -101 deg C
BP (exp database): -26 deg C
VP (exp database): 4.99E+03 mm Hg (6.65E+005 Pa) at 25 deg C
Water Solubility Estimate from Log Kow (WSKOW v1.42):
Water Solubility at 25 deg C (mg/L): 767.8
log Kow used: 1.68 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 1089.7 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Neutral Organics
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 1.53E+000 atm-m3/mole (1.55E+005 Pa-m3/mole)
Group Method: Incomplete
Exper Database: 5.00E-02 atm-m3/mole (5.07E+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: 1.329E-001 atm-m3/mole (1.346E+004 Pa-m3/mole)
VP: 3.98E+003 mm Hg (source: MPBPVP)
WS: 768 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 1.68 (KowWin est)
Log Kaw used: 0.311 (exp database)
Log Koa (KOAWIN v1.10 estimate): 1.369
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.1786
Biowin2 (Non-Linear Model) : 0.0161
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.4607 (weeks-months)
Biowin4 (Primary Survey Model) : 3.4261 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.5275
Biowin6 (MITI Non-Linear Model): 0.0000
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.8621
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): 6.65E+005 Pa (4.99E+003 mm Hg)
Log Koa (Koawin est ): 1.369
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 4.51E-012
Octanol/air (Koa) model: 5.74E-012
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 1.63E-010
Mackay model : 3.61E-010
Octanol/air (Koa) model: 4.59E-010
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 0.0062 E-12 cm3/molecule-sec
Half-Life = 1715.884 Days (12-hr day; 1.5E6 OH/cm3)
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
2.62E-010 (Junge-Pankow, Mackay avg)
4.59E-010 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 86.03 L/kg (MCI method)
Log Koc: 1.935 (MCI method)
Koc : 28.69 L/kg (Kow method)
Log Koc: 1.458 (Kow method)
Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
Total Kb for pH > 8 at 25 deg C : 2.646E-007 L/mol-sec
Kb Half-Life at pH 8: 8.299E+004 years
Kb Half-Life at pH 7: 8.299E+005 years
(Total Kb applies only to esters, carbmates, alkyl halides)
Bioaccumulation Estimates (BCFBAF v3.01):
Log BCF from regression-based method = 0.775 (BCF = 5.963 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -0.3429 days (HL = 0.4541 days)
Log BCF Arnot-Gobas method (upper trophic) = 0.750 (BCF = 5.627)
Log BAF Arnot-Gobas method (upper trophic) = 0.750 (BAF = 5.627)
log Kow used: 1.68 (estimated)
Volatilization from Water:
Henry LC: 0.05 atm-m3/mole (Henry experimental database)
Half-Life from Model River: 1.043 hours
Half-Life from Model Lake : 96.07 hours (4.003 days)
Removal In Wastewater Treatment (recommended maximum 95%):
Total removal: 95.10 percent
Total biodegradation: 0.02 percent
Total sludge adsorption: 0.44 percent
Total to Air: 94.64 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 50.7 5.24e+004 1000
Water 46.3 900 1000
Soil 2.67 1.8e+003 1000
Sediment 0.28 8.1e+003 0
Persistence Time: 169 hr