emulsified anionic asphalt (anionic emulsified asphalt) - emulsified asphalt in which the asphalt globules are electronegatively charged. Common grades of anionic asphalt are: RS asphalt - anionic rapid setting emulsified asphalt; MS asphalt - anionic medium-setting emulsified asphalt; SS asphalt - anionic slow-setting emulsified asphalt