Industrial Liquid Soap Saponification Process

Added: 2026-05-20

[00:00:00]The process now moves into saponification, the core reaction that transforms oils into soap. The prepared oils and alkali solution are combined in a reaction vessel and heated to approximately 80 to 100° C.

[00:00:13]And this is while being continuously mixed. As the reaction begins, the molecular structure of the oil breaks apart, separating into fatty acids and glycerol. These fatty acids then react with potassium hydroxide to form potassium salts, which are the active cleaning molecules in liquid soap. This reaction must be carefully controlled.

[00:00:31]Temperature, mixing speed, and concentration all affect [music] how evenly the reaction occurs. If any part of the mixture reacts faster or slower than the rest, the final product [music] can become unstable. During saponification, continuous monitoring ensures that the reaction reaches completion [music] without leaving unreacted materials.

[00:00:50]Sensors track temperature, pH, and consistency throughout the mixture. The goal is to confirm that all fatty acids have reacted with the alkali, forming a uniform soap base.