The cationic detergent that is used in hair conditioners is

Options

A. sodium dodecylbenzene sulphonate
B. Cetyltrimethyl ammonium bromide
C. tetramethyl ammonium chloride
D. sodium stearyl suphate

Answer

### Step-by-Step Solution:

1. **Understanding Cationic Detergents**:
- Cationic detergents are positively charged surfactants that are commonly used in various personal care products, including hair conditioners. They help to reduce static electricity and improve the texture of hair.

2. **Identifying the Cationic Detergent Used in Hair Conditioners**:
- The specific cationic detergent that is widely recognized for its use in hair conditioners is **Cetyl Trimethyl Ammonium Bromide**.

3. **Chemical Structure of Cetyl Trimethyl Ammonium Bromide**:
- The chemical formula can be broken down as follows:
- "Cetyl" refers to a long-chain alkyl group (C16H33).
- "Trimethyl" indicates that there are three methyl groups (CH3) attached to the nitrogen atom.
- "Ammonium" indicates that the nitrogen atom carries a positive charge.
- "Bromide" indicates that there is a bromine ion (Br-) associated with the ammonium ion to balance the charge.

4. **Overall Charge**:
- The overall charge of the compound is positive due to the ammonium ion, while the bromide ion carries a negative charge, resulting in a neutral compound overall.

5. **Conclusion**:
- Therefore, the cationic detergent used in hair conditioners is **Cetyl Trimethyl Ammonium Bromide**.