Benzene,crude benzene,pure benzene 1.CAS:71-43-2 2.china ... .9% crude benzene,pure benzene,crude benzol 1)Yellow Transparent Liquid 2)active ingredient: benzene,toluene and xylene3)Six years ... used to deep processing of benzene, toluene, xylene and other products, benzene, toluene, xylene is precious basic organic chemical ... light yellow transparent Liquid 99.9% crude benzene,pure benzene,crude benzol