Detergents Surfactant structures Small ionic head (water soluble; hydrophilic) examples: carboxyl (-CO0- Na+) Long hydrocarbon tail (oil soluble; hydrophobic) sulfonate(一SO3Na+ hydroxyl (-OH) Natural soaps derived from animal fats Synthetic detergents Example: 0 Cl7H35-C CuH SOa Nat Sodium stearate Sodiurm alkylbenzene sulfonateDetergents: Surfactant structures