Butylhydroxytoluene (Butylated hydroxytoluene, BHT, ionol, dibunol, agidol-1, E321).
Fomula (CH3)(tert-C4H9)2C6H2uwu
Mu mawonekedwe ake oyera-woyera ufa. Ufa waukadaulo wa ionol-chikasu.
Amagwiritsidwa ntchito ngati antioxidant popanga zakudya, mafuta, rubber, mapulasitiki, etc.
Ndiwonso poyambira pakupanga kwamitundu yosiyanasiyana ya ma phenols omwe amalepheretsa malo, ambiri omwe amakhala ndi zochitika zamoyo kapena amagwiritsidwa ntchito m'makampani.