L8. Saponification

On the 1st of december we decided to experiment the saponofication, we wanted to make soap. Saponification is a reaction that produces soap when you mix fats and a strong base (NaOH).

MATERIALS

-32 gr NaOH
-90 ml H2O
-270ml of olive oil
-safety goggles
-2 beakers
-gloves
-balance
-stirring rod
-spatula
-heating plate

PROCEDURE


First we put on our safety goggles and gloves to protect ourselves. Then we mixed in a 600 ml beaker the 32 grams NaOh with the 90 ml of water, slowly, we noticed that the beaker heated up, it is a endotermic reaction! After that we slowly started to pour the olive oil in the beaker, at the same time mixing the mixture with the stirring rod. We mixed it for 20 minutes, also we heated the beaker on the heating plate to accelerate the reaction. Then we put a couple of drops of aroma and finally we put the soap mixture in a mold.

Results and observations: We will let the soap mixture sit for a couple of days and then we will obtain hard soap. The reaction of saponifiaction:

First by hydrolisis we obtained glicerine and oleic acid, then the oleid acid joined the NaOH and soap and water were formed.