Saponification reaction refers to the reaction between alkali and ester to produce alcohol and carboxylate, especially the reaction between oil and alkali. Saponification reaction is irreversible, and its chemical reaction mechanism is as follows: step one, the addition reaction of ester with OH-; The second step is to eliminate the reaction; Step 3: acid-base reaction.
Saponification reaction is not only a common reaction between oil and sodium hydroxide, but also a reaction between oil and concentrated ammonia water. In a narrow sense, saponification reaction is limited to the reaction of mixing oil with sodium hydroxide or potassium hydroxide to obtain sodium/potassium salts of higher fatty acids and glycerol.
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