Abstract:
The problem of waste in the environment is becoming a national
problem. One of the wastes that pollute the environment is used
cooking oil. In 2019, 13 million tons of used cooking oil in
Indonesia amounted to 18.5% of the remaining cooking oil
consumption. Disposal of used cooking oil waste can cause soil
and water pollution. Prevention can be done by utilizing oil in a
liquid hand soap. The study’s objective is to know the effect of
stirring time on liquid hand soap manufacturing laboratory scale
made of used cooking oil based on analysis of pH, total active
materials, insoluble materials in ethanol, and free alkali. The
research method of treatment and experiment was making
liquid hand soap on a laboratory scale. The sample in this study
was used cooking oil taken from Belakang I Street, Simpangan
Village. The result and discussion showed that the hand soap
product with a stirring time of 45 and 60 minutes had a
showed that pH, free alkaline, and insoluble material in ethanol
are significant difference and total active materials is insignificant
difference using ANOVA: single factors in comparison stirring
time 45 minutes and 60 minutes. The parameter is meet the
quality standard but not comply using T-test of equals variance.
