The word amphoteric is derived from the Greek amphi meaning both and used to describe surfactants which have both a positive (cationic) and a negative (anionic) group. Sometimes the phrase ampholytic is used. The nomenclature of some amphoterics has been confused in the past, partly due to mistakes in the original chemical structures, and, more recently, due to retention of the word betaine for products which are strictly not amphoteric. The main categories of amphoterics are as follows.
KeywordsAcrylic Acid Mixed Micelle Quaternary Ammonium Compound Amine Oxide Ether Sulphate
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