There are rather long lists of hazardous materials that are not allowed, but common sense should tell you that you should not take gasoline, corrosive materials, poisonous gases, and other such items on the aircraft unless they are allowed by the airline and shipped in a proper container.
Keelatud ohtlike ainete kohta on olemas päris pikad nimekirjad, ent kaine mõistus peaks sulle ütlema, et sa ei tohiks lennukisse tuua bensiini, sööbivaid aineid, mürkgaase ja muud taolist, ilma et selleks oleks lennufirma luba ning see aine oleks vastavas konteineris.