Antioxidant d Molecular formula : c16h13n Chemical name: n-phenye---naphthylamine Executive standard: q/12hg 4521-2001 Specification: Index grade Appearance gray to red powder Initial melting point ¦ 105.0 Loss on heating % 0.20 Ash content % 0.20 Residue on sieve(100m) % 0.20 Application: it is widely used in all kinds of natural rubber and synthetic rubber. It has good preventing performance caused by heat, oxidizing and wind. It also can be used for making some black rubber products. Package and storage: 25kg paper bag in lined with plastic bag. It should be stored in a cool, well-ventilated area.