Thiadiazole Derivative T561 Product Code: D1411 Brand Name: Petrocor® T561 CAS No.: 59656-20-1 Main Content: 99% Application: T561 chemical name is 2,5-bis(tert-dodecyldithio)-1,3,4-thiadiazole, used as copper corrosion inhibitor for industrial and automotive gear lubricants and greases. It has the same good performance as Cuvan 484. Petrocor® T561 has good performance as Cuvan 484