ASTM D 4937 - 96 (Reapproved 2012) Standard Test Method for p-Phenylenediamine Antidegradants Purity by Gas Chromatography

Current edition approved May 1, 2012. Published July 2012. Originally approved in 1989. Last previous edition approved in 2006 as D4937 – 96 (2006)ε1. — 7 p.
This test method covers the determination of the purity of Class I, II, and III p-phenylenediamine (PPD) antidegradants as described in Classification D4676 by gas chromatography (GC) detection and area normalization for data reduction.