Journal of Engineering and Applied Sciences

Year: 2009
Volume: 4
Issue: 2
Page No. 110 - 113

Comparison of Various Fatty Acid Sources for Making Soft Soap (Part 1): Qualitative Analysis

Authors : M.O. Edoga

Abstract: This study compared the various fatty acid sources for making toilet soap via conventional method. These included palm oil, Palm Kernel Oil (PKO), groundnut oil and tallow fat. The toilet soap samples were developed using hot batch process by reacting 16.8 g caustic potash with 50 g oils/fats. The mixture was continuously stirred via electrically operated mechanical stirrer for 25-30 min. Later, 20 g of water was added to the system to break-up the foams, as well as aid the saponification process. Stirring was continued for 40-60 min, after which the salting process was carried out by adding the mixture to a solution of saturated sodium chloride. Also, stirring continued until the paste became thicker thereafter the reaction was stopped and was allowed to stand for several hours to cool and solidify. Analysis of the various soap samples was carried out to test for formability, corrosiveness, hardness, pH, rate of wear, acid value, saponification value and iodine value. Formability and corrosiveness results obtained are as follows: 9.90 cm for palm oil, 10.70 cm for (PKO), 10.74 cm for groundnut oil and 11.58 cm for tallow fat and 2.76% free alkaline for palm oil, 2.62% free alkaline for PKO, 2.60% free alkaline for groundnut and 2.52% free alkaline for tallow fat soap, respectively. The pH values are also given as 11.63 for palm oil-based soap, 11.0 for PKO-based, 10.30 for groundnut oil-based and 10.46 tallow oil-based soap.

How to cite this article:

M.O. Edoga , 2009. Comparison of Various Fatty Acid Sources for Making Soft Soap (Part 1): Qualitative Analysis. Journal of Engineering and Applied Sciences, 4: 110-113.

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