Khark petrochemical complex was first, established as Kharg  chemical co. To recover Propane, Butane, Naphtha and Sulphur from the  offshore oil field associated gases by the joint venture of national petrochemical company of Iran and American Co.(Amoco) on a 50/50 basis with a capital of 900 million Rials.
Engineering of the operational units was carried out by J.E.Prichard(U.S.A) and the construction and installations by Chiyoda(Japan), started early in 1967 and commissioned in 1969.