Emva kokuba i-ionized emanzini, inomsebenzi ongaphezulu kunye ne-negative charge ebizwa ngokuba yi-anionic surfactant.
I-Anionic surfactants ziimveliso ezinembali ende, esona sixhobo sikhulu kunye nezona ntlobo zininzi phakathi kwe-surfactants. I-Anionic surfactants yahlulwe yaba yi-sulfonate kunye ne-alkyl Sulfate ngokwesakhiwo samaqela abo e-hydrophilic, okwangoku awona macandelo aphambili e-anionic surfactants. Imisebenzi eyahlukeneyo ye-surfactant ifunyanwa ikakhulu ekutshintsheni iipropati zomgangatho wolwelo, ujongano lwe-liquid-liquid kunye nojongano olululwelo-oluqilima, apho umphezulu (umda) iipropati zolwelo zingundoqo.