I-acetic acid, i-single-carbon organic carboxylic acid, ibonakala ngokuvutha kwayo kanye nezinto ezigqwalayo, ewela ngaphansi kwesigaba II semithetho yamakhemikhali ayingozi ephilayo.
Emazingeni okushisa emvelo angama-39 ℃, kuba yingozi evuthayo. I-anhydrous acetic acid ehlanzekile, eyaziwa nangokuthi i-glacial acetic acid, iqinile elingenambala eliheha umswakama futhi liqina ku-16.6℃ (62℉) zibe amakristalu angenambala. Isixazululo saso sibonisa i-asidi ethambile kanye nokugqwala okukhulu, kuyilapho umhwamuko wayo ungabangela ukucasuka emehlweni nasemakhaleni.