CAS RN:110-89-4


The Henry's Law constant for piperidine is 4.45X10-6 atm-cu m/mole(1). However, a pKa of 11.28(2) indicates piperidine will exist almost entirely in the cation form at pH values of 5 to 9 and therefore volatilization from water surfaces is not expected to be an important fate process(3). Piperidine's pKa indicates that volatilization from moist soil surfaces may not occur(SRC). Piperidine is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 32.1 mm Hg(4).
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