Abstract—A study about variation of calcium metal concentration in mixed Ca/Mg/Zn metal to produce of soap with high alkaline content together with oleic acid was studied. Calcium metal which is used vary from 15 (15μ), 50 (50μ) and 85 (85μ) % with modified fusion as method for saponification. Variation of calcium metal into mixture of Ca/Mg/Zn metal is proved to have different effect to alkaline content value and oleic acid conversion into basic soap. Soap from variation of 85μ had alkaline content of 44.5% weight. Inside the whole soap produced from 15μ, 50μ and 85μ, hydroxyl group was detected with low intensity inside the range of wavenumber length of 3200-3570 cm
-1 according to FT-IR spectrum. Maximum conversion of oleic acid into soap happened when varied at 50μ is 97.9%.
Index Terms—Metal mixing, alkaline content, soap, hydroxyl group.
G. F. Neonufa is with Department of Agriculture Product Technology, Artha Wacana Christian University, Kupang, PC 85228 East Nusa Tenggara, Indonesia (e-mail: godliefneonufa@gmail.com). M. Pratiwi, A. N. Istyami, and R. Purwadi are with the Chemical Engineering Department, Institut Teknologi Bandung, Bandung, PC 40132 West Java, Indonesia (e-mail: meitibramantyo@gmail.com, anistyami@che.itb.ac.id, ronny.purwadi@gmail.com).
E. Puspawiningtyas is with the Chemical Engineering Department, Universitas Muhammadiyah Purwokerto, Banyumas, PC 53182 Central Java, Indonesia (e-mail: endartiyas@yahoo.com).
L. Elizabeth in with the State Polytechnic of Bandung, Ciwaruga, PC 40559 West Java, Indonesia (e-mail: lidya.elizbth@gmail.com).
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Cite: Godlief F Neonufa, Meiti Pratiwi, Astri Nur Istyami, Endar Puspawiningtiyas, Lidya Elizabeth, and Ronny Purwadi, "Investigation of Ca/Mg/Zn Metals Mixing Ratio for Production of Soap with High Alkali Content," International Journal of Chemical Engineering and Applications vol. 10, no. 5, pp. 149-153, 2019.
