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Which chemical compound is not added at the stage of sodium reduction of coconut oil (detergent manufacture)?

Which chemical compound is not added at the stage of sodium reduction of coconut oil (detergent manufacture)? Correct Answer Oleum

Molten sodium is added slowly to coconut oil in an aliphatic solvent generally Xylene or toluene with esterifying alcohol such as amyl alcohol.

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2. Groundnut oil
3. Coconut oil
4. Mustard oil
5. Sunflower oil
6. Soyabean oil
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