The production process and principle of soap

1. The principle of oil and sodium hydroxide were boiled and hydrolysis sodium for senior fatty acid and glycerol, the former after processing and molding is soap.2. Each one articles 150 and 150 ml beaker, glass rod, alcohol lamp, asbestos, tripod, lard fat or oil (or other animals and plants), NaOH, 95% alcohol, saturated salt water.3. (1) operation in 150 ml beaker, sheng 6 g of fat and 5 ml 95% ethanol, then add 10 ml40 % NaOH solution.Stir with glass rod, make its dissolution (micro heat if necessary).(2) put the beaker asbestos online (or water), with a little heat, and stir with glass holds.In the process of heating, if alcohol and water evaporate and reduce should be added at any time, to keep the original size.Therefore can be prepared in advance of alcohol and water mixture (1:1) 20 ml, in order to have add.(3) about 20 min after heating, basic complete saponification reaction.If required to test, can use glass stick out a few drops of the sample into the test tube, adding distilled water for 5 ~ 6 ml in a test tube, the heating oscillation.Let stand, there are oil separated, saponification incomplete, can add continue saponification lye.(4) to 20 ml hot distilled water slowly to the saponification completely viscous liquid, mixing them miscibility.Then slowly pour the viscous fluid in 150 ml hot saturated salt solution, while stirring.Let stand, soap and salting-out buoyancy, all available glass rod after precipitation and solidification for soap, soap is made.

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