O-phthalonitrile Index contentIy99%moisture 0.1 melting point139íµ-140íµú¼white pin crystal Use widely used in phthalein sulfonamideíóphthaleiníó paint and coloring matteríóhigh thermal resistance polyamide fibreíóxylylíóvulcabond plastic and desulfurized catalyzer 50g/sack
