Abstract
Abstract ε-Aminocaproic acid (ACA) and its linear oligomers were transformed with formaldehyde to the corresponding Schiff bases, which are polarographically active. The a. c. and d. c. polarographic behavior was almost same among ACA, its linear dimer and trimer, of which the half-wave potentials and peak potentials were identical within the range of experimental errors. In d. c. polarography the diffusion current constant was independent of the degree of polymerization, although the peak-current constant in a. c. polarography was influenced by the degree of polymerization and there existed no linear relationship between the concentrations and the peak currents. This electrode reaction was supposed to be a one-electron reduction. In the presence of ε-carprolactam, the N-hydroxymethylation of the compound interfered with the appearance of polarographic waves.
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