O-phthalonitrile Index:contentí¦99%,moistureí_0.1%,melting point139íµ-140íµ,white pin crystal. Use:widely used in phthalein sulfonamide,phthalein,paint and coloring matter,high thermal resistance,polyamide fibre,xylyl,vulcabond plastic and desulfurized catalyzer. formula:C8H4N2 50g/sack,20kg/case
