Anti-dumping duty on Phthalic Anhydride: amendment substitutes a cooperating producer's name in the duty schedule. Imposition of definitive anti-dumping duty on Phthalic Anhydride imports from specified countries rests on findings of dumping below normal value, material injury to domestic industry and causation; the Central Government had imposed duty under the Customs Tariff Act. Subsequently the designated authority concluded a requested change constituted only a producer name change without altering ownership or business nature, and the notification is amended to substitute the producer's name in the duty table under the statutory antidumping powers.