Naugard PANA Phenyl-alpha-naphthylamine Crompton-Uniroyal Chemical Antioxidants >> Amine Chloroprene Rubber (CR) Rubber - Elastomer (Chloroprene, Butyl …) NAUGARD ® PANA Antioxidant Phenyl-alpha-naphthylamine Gel inhibitor, which readily incorporates into elastomers during processing. Discoloring and staining. General purpose amine antioxidant especially recommended for CR, NR and SBR. Naugard® PANA is a general purpose antioxidant for natural rubber and Neoprene. Also a gel inhibitor, which readily incorporates into elastomers during processing. Discoloring and staining phenyl-alpha-naphthylamine. Used as a general purpose antioxidant for natural rubber, CR, NR and SBR. Can be used as a gel inhibitor.