Rubber Antioxidant IPPD Chemical Name : N-isopropyl-N'-phenyl-p-phenylene diamine CAS NO.: 101-72-4 Specification: Appearance:Dark brown to dark violet pellets. Melting Point:70.0℃ MIN Heating loss:0.30% MAX Ash:0.20% MAX Assay(GC): 97% MIN Application : Mainly used in manufacture of tires , rubber belts and other rubber products.