I-formic acid egxilile (HCOOH, 85 %): i-asidi ye-organic enamandla esetshenziswa njengesibambisi selathekisi ekugxileni okuphakeme, njengesisusa ukhukhu, njengesigcini nanjenge-reagent ekuhlanganiseni kwe-organic. Iyadla futhi ikhipha umhwamuko ohlabayo — sebenzisa lapho umoya ungena nangezandla ezimelana ne-asidi.