Question

What is the water solubility properties of a surfactant with HLB range of 1-4?

• A. Insoluble
• B. Soluble
• C. Stable
• D. Milky dispersion

Hint:

Surfactants with an HLB of 1-4 are oil-soluble and typically insoluble in water, used in formulations where oil affinity is desired.

Answer 1

The Correct Option is A

Step 1: Understanding the HLB Scale
- The HLB (Hydrophilic-Lipophilic Balance) scale measures the balance between the hydrophilic (water-loving) and lipophilic (oil-loving) properties of surfactants. The higher the HLB value, the more water-soluble the surfactant.

Step 2: Interpretation of Low HLB Values
- Surfactants with an HLB range of 1-4 are considered highly lipophilic (oil-loving), meaning they have a stronger affinity for oils rather than water. Therefore, they are typically insoluble in water.

Step 3: Conclusion
Surfactants with an HLB range of 1-4 are insoluble in water, which means they tend to be more useful in oil-based systems.