UOP 883

Purity of UOP No. 5 Inhibitor by Capillary Column GC

Published by	Publication Date	Number of Pages
UOP	01/01/1995	8

Category: UOP

UOP 883 – Purity of UOP No. 5 Inhibitor by Capillary Column GC

This method is for determining the purity of UOP No. 5 inhibitor (N,N‘-di-sec-butyl-p-phenylenediamine). The method is applicable to high purity UOP No. 5 and to production stream samples. The following components and group classifications are reported: light ends, methyl ethyl ketone (MEK) and methyl ethyl carbinol (MEC), light boiling intermediates, monoalkylated UOP No. 5, heavy boiling intermediates, UOP No. 5, trialkylated UOP No. 5, and heavies. MEK and MEC co-elute and are reported as a composite. Components that do not elute from the chromatographic system, if any, under the specified conditions, commonly called tars, are not determined. The identified components are reported on a tar-free basis. The range of quantitation for any single component is 0.01 to 99.99 mass-%.