The Influence of Strong Reduced Water and Fresh Coconut Oil in Viscosity of Liquid Hand Soap

Abstract

Abstract Innovation of liquid hand soap continues to be done, among others, using natural local raw materials. This research used strong reduced water (SRW), an alkali produced from a water ionizer machine (with enhancer Sodium Chloride solution), which is eco-friendly and comfortable on the skin. The study also used fresh coconut oil (FCO), was produced by drying process and zero waste. The objective of this research was to determine the effect of utilization of SRW and FCO in the making process of liquid hand soap, which gave good viscosity. Fresh coconut oil (FCO) was reacted with SRW (pH 11.5) for 30 minutes at room temperature (30 °C), then mixed with sodium lauryl sulfate, sodium sulfate, other additives such as dyes, fragrances, electrolyzed oxydized water (EOW, pH 2.5), Ethylenediaminetetraacetic acid (EDTA) and distilled water. EOW was produced from the ionizer machine too. After saponification process was completed (about 24 hours), the viscosity and density of the liquid soap was measured. The better composition of FCO-SRW yielding good viscosity of liquid soap was 30 to 50 ml based on 500 ml distilled water production. The viscosities of this product were 982.55 to 1,782.25 centipoises, density of 1.0049-1.1175 g/ml, and pH 7. The using of reaction product of fresh coconut oil (FCO) and strong reduced water (SRW) can increase the viscosity of liquid hand soap.