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Saponification is a chemical reaction that occurs when a fat or oil is mixed with an alkali, such as sodium hydroxide (NaOH) or potassium hydroxide (KOH). This reaction results in the formation of soap and glycerin.

During saponification, the alkali breaks down the fat or oil into its constituent fatty acids and glycerol molecules. These fatty acids then react with the alkali to form soap molecules, while the glycerol is released as a byproduct.

Saponification has been used for centuries to make soap, and it is still the most common method used today. The process involves carefully measuring and mixing the fat or oil with the alkali, and then heating the mixture to a specific temperature and stirring it for a set period of time.

The resulting soap can be used for a variety of purposes, including cleaning, personal hygiene, and industrial applications. Saponification is also used in the production of other products, such as biodiesel and certain types of resins.
 

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