Oils and fats are obtained by saponification of potassium stearate. Its formula is CH3−(CH2)16−COO−K+. Lyophobic end of atom is (CH3) and lyophilic end is COO−K+. potassium stearate is an example of

The substance, whose molecules associate with given solvent to form colloidal particle known as association colloidal. The molecule of soap and detergent are generally smaller than colloidal particle. These molecules associate in concentration solution to form colloidal size particle. These association of soap and detergent known as micelle.