IU.S. Environmental Protection Agency (EPA) parizvino iri kuita ongororo yekubatana pakati pebutadiene negomarara.
Uyezve, EPA yakagadzira hurongwa hwekugadzirisa kuparadzirwa kwebenzene, chinozivikanwa secarcinogen. The agency asserts that substantial data exist demonstrating that butadiene, along with its synthetic rubber manufacturing process, significantly endangers human health.