[18a-M_135-1~9] 1.2 Education

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)

[18a-M_135-7] Report on Classroom Practice Using a Rapid Saponification Method for Rapeseed Oil with Diglyme-Based DPG Solvent

〇(D)Takaaki Obara¹, Shigeru Fukuda², Keisuke Yamana³ (1.Graduate School of Shimane Univ., 2.Higashihiroshima High School Attached to Kinki Univ., 3.Otemae Marugame High School)

Keywords:

saponification,Diglyme-based dipropylene glycol,Na+ chelate stabilizing effect

Taking the saponification reaction of rapeseed oil as an example, when the temperature dependence by heating, which is an increasing factor of the chemical reaction rate, was compared with the affinity dependence by Diglyme based dipropylene glycol (DPG) solvent, which has a saponification equivalent Na+ chelate stabilizing effect, the latter showed a reaction rate 500 times higher. Solvent saponification using DPG solvent was attempted to produce solid soap from rapeseed oil using this result, and it was obtained in about 10 minutes. As a result of practicing both contents in high schools, both were evaluated favorably.