Sodium lauryl sulphonate

Options

A. antiseptic
B. disinfectant
C. detergent
D. soap

Explanation

### Step-by-Step Solution:

1. **Identify the Compound**:
- The compound in question is Sodium Lauryl Sulfate (SLS). Its chemical formula is CH3(CH2)11OSO3Na.

2. **Classify the Compound**:
- Sodium Lauryl Sulfate is classified as an anionic detergent.

3. **Understand Anionic Detergents**:
- Anionic detergents are characterized by having a negatively charged functional group. In the case of SLS, the sulfonate group (–SO3Na) is the anionic part.

4. **Cleansing Action**:
- The negative part of the anionic detergent is responsible for its cleansing action. This is because the anionic part interacts with dirt and oils, allowing them to be washed away.

5. **Differentiate from Other Types**:
- It is important to differentiate SLS from antiseptics, disinfectants, and soaps. Antiseptics are used to kill or inhibit the growth of microorganisms, disinfectants are used to destroy bacteria and viruses on surfaces, and soaps are typically made from natural fats and oils.

6. **Conclusion**:
- Based on the classification and properties discussed, Sodium Lauryl Sulfate is best categorized as a detergent.

### Final Answer:
Sodium Lauryl Sulfate is a detergent.

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