Surfactants and its intermediatesSurfactants are divided into ionic surfactants (including cationic surfactants, anionic surfactants, amphoteric surfactants), non-ionic surfactants, amphiphilic surfactants, etc.
1. Anionic surfactants: stearic acid, sodium dodecylbenzene sulfonate
2. Cationic surfactants: quaternary ammonium compounds
3. Zwitterionic surfactants: lecithin, amino acid type, betaine type
4. Nonionic surfactants: fatty acid glycerides, fatty acid sorbitan (Span), polysorbate
