How to make homemade liquid soap

One of the most traditional experiments in the study of chemistry is to make soap from an oily material or oil. In this article, we will look at how to make homemade liquid soap, from simple materials quickly and effectively, using reaction concepts based on organic chemistry.

Liquid soaps


- A recent glass.

- A mixing paddle or wooden spoon.

- Water.

- Oil.

- Caustic soda.

Procedure for making liquid soap

The procedure for making liquid soap is quite simple. We start by thoroughly washing our container with a dishwasher. Then, we dry it and add about 3 litres of water.

Liquid soaps

With the water in the container, carefully add about 500 g of caustic soda little by little. Keep in mind that this reaction is exothermic and that heat energy is released, so add the caustic soda very slowly and in small portions and mix with the water until it dissolves. Important note: Remember to protect your hands with gloves and avoid skin contact, preferably wear protective glasses and a lab coat.

Once we have the caustic solution, we add little by little about 3 litres of oil, while mixing with a wooden spoon. This procedure is very slow and must be prolonged for at least an hour for the mixing to be perfect and for the reaction to take place completely. If we do it well, we will see a thick paste of a very light colour, almost whitish.

This mixture is our raw soap, let it stand for at least two days and it will be ready for use. It is advisable to use indicator paper to verify that its PH is not high (the PH of the soap should not be higher than 8), if so, we must reduce the amount of caustic soda and carry out the process again.

If we wish to add colour and smell, we can use colourants and essences in the mixture.

Preparation of liquid soap

How soap is created

Soap is the result of a reversible reaction, which is called saponification. In this reaction, an alkaline solution reacts with a triglyceride (oil) to generate a polar salt and water. This salt is the soap that reacts to form foam, which removes the dirt thanks to another electrochemical reaction, which takes place on the surface to be cleaned.

2 thoughts on “Cómo hacer jabón líquido casero”

  1. no me salio el jabon..............el ph salio14 que debo hacer????ayudenmeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

  2. Hello!!! I like your recipe, I have made it and it turns out that the soap is not transparent like yours. Could you tell me why? thank you very much.

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