Acetaldehyde e boetse e tsejoa e le ethanal, ke motsoako oa lik'hemik'hale oa organic o nang le foromo CH3CHO, ka linako tse ling e khutsufatsoa ke litsebi tsa lik'hemik'hale e le MeCHO (Me = methyl).Ke mokelikeli o se nang 'mala kapa khase, e belang haufi le mocheso oa kamore.Ke e 'ngoe ea li-aldehyde tsa bohlokoa ka ho fetisisa, tse hlahang ka bongata tlhahong' me li hlahisoa ka bongata indastering.