This report presents a cost analysis of chloroprene production from butadiene and chlorine. The process examined is a typical vapor phase butadiene chlorination process. In this process butadiene is first chlorinated producing two chlorinated isomers, 1,4-dichloro 2-butene and 3,4-dichloro 1-butene. In a second step, 1,4-isomers are isomerized to 3,4-dichloro 1-butene. This chemical is then dehydrochlorinated in the presence of caustic soda producing chloroprene and sodium chloride. This report was developed based essentially on the following reference(s): Keywords: Dupont, Chloroprene Rubber, Neoprene, Chlorination