In such detergents, the anionic part of the molecule is involved in the cleansing action.
They are mostly used for household work and in tooth paste
2. Cationic Detergents
These are quaternary ammonium salts of arnines with acetates, chlorides or bromides as anion. For example,
Cationic detergents are used in hair conditioner. They have germicidal properties but are expensive therefore, these are of limited use.
3. Non-ionic Detergents
Such detergents does not contain any ion in their constitution. One such detergent can be obtained by reaction of stearic acid and polyethylene glycol.
Liquid dish washing detergents are non-ionic type, Mechanism of cleansing action of this type of detergents is the same as that of soaps.