Butadiene (CH2:CH:CH2) he tae kore, hau korekore e kore e rewa ki te wai engari ka memeha ki te waihano me te etera, ka taea te memeha i roto i te otinga parahi(I) pūhaumāota.
Ko ona rohe pahū mai i 2.16% ki 11.17%. I te pāmahana rūma, he tino koretake, he pai ki te pirau pahū.