Question

Cetyltrimethyl ammonium bromide is a_________.

Options

• anionic detergent

• cationic detergent

• non-ionic detergent

• sweetener

Answer 1

Cetyltrimethyl ammonium bromide is a cationic detergent.

Explanation:

Cetyltrimethyl ammonium bromide (CTAB) has the formula [C₁₆H₃₃N(CH₃)₃]⁺ Br⁻, where the nitrogen atom (N⁺) carries a positive charge, making the hydrophilic head cationic (positively charged). This positive charge allows it to adsorb onto negatively charged surfaces like hair, skin, and fabrics, which is why cationic detergents are widely used as fabric softeners, hair conditioners, and antiseptics.