Fashewar Shenhai-Hujja
Ba a bambanta kayan haɗari a matsayin aji A ko B amma ta hatsarorinsu, kamar abubuwa masu lalata, guba masu guba, da ruwaye masu ƙonewa.
An keɓe rarrabuwa na ajin A da B a cikin GB50160-2008 “Ka'idojin Tsare Tsare-tsaren Kare Wuta na Kamfanonin Petrochemical.”
Pentane, tare da madaidaicin walƙiya na -40 ℃ da ƙananan ƙarancin fashewar 1.7%, an kasafta shi azaman sinadari mai haɗari mai haɗari na Class A.