One of the quality tests for caprolactam is the PAN analysis and is described in
ISO 8660. The permanganate absorption number (PAN) defines the stability of a caprolactam sample to potassium permanganate and is a measure of the purity of the caprolactam in relation to the presence of oxidizable impurities, e.g. unsaturated caprolactams.
The ADI 2045TI Process Analyzer meets all the process criteria and is suitable to determine the impurities in caprolactam 24/7 using precise time and temperature controlled colorimetric measurement.