Boiling Point | Degree | Reference |
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129.7 deg C | Lide, D.R. (ed.). CRC Handbook of Chemistry and Physics. 76th ed. Boca Raton, FL: CRC Press Inc., 1995-1996., p. 3-304 |
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Volatilization | The Henry's Law constant for pyrrole is 1.8X10-5 atm-cu m/mole(1). This Henry's Law constant indicates that pyrrole is expected to volatilize from water surfaces(2). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as approximately 42 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as approximately 368 hours(SRC). Pyrrole's Henry's Law constant(1) indicates that volatilization from moist soil surfaces may occur(SRC). The potential for volatilization of pyrrole from dry soil surfaces may exist(SRC) based upon a vapor pressure of 8.35 mm Hg(3). Literature: (1) Hawthorne SB et al; Environ Sci Technol 19: 922-7 (1985) (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington,DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (3) Daubert TE, Danner RP; Physical and Thermodynamic Properties of Pure Chemicals: Data Compilation. Design Inst Phys Prop Data, Amer Inst Chem Eng NY,NY: Hemisphere Pub Corp 5 Vol (1987) |
Soil Adsorption | The Koc of pyrrole is estimated as approximately 61(SRC), using a log Kow of 0.75(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that pyrrole is expected to have high mobility in soil. Literature: (1) Hansch C et al; Exploring QSAR. Hydrophobic, Electronic, And Steric Constants. ACS Prof Ref Book. Washington,DC: Amer Chem Soc p. 8 (1995) (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington,DC: Amer Chem Soc pp. 4-9 (1990) (3) Swann RL et al; Res Rev 85: 17-28 (1983) |
Vapor Pressure | Pressure | Reference |
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8.35 mm Hg @ 25 dec C | Daubert, T.E., R.P. Danner. Physical and Thermodynamic Properties of Pure Chemicals Data Compilation. Washington, D.C.: Taylor and Francis, 1989. |
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