: based on permanent anions ( sulfate ,  sulfonate ,  phosphate ) or pH-dependent anions ( carboxylate ): Sulfates: Alkyl sulfates:  ammonium lauryl sulfate ,  sodium lauryl sulfate  (SDS); Alkyl ether sulfates:  sodium laureth sulfate , also known as sodium lauryl ether sulfate (SLES), sodium myreth sulfate ; Sulfonates: Docusates :  dioctyl sodium