Penentuan Kadar MgO, CaO dan SiO2 pada Pupuk Dolomit dengan metode Titrasi

Abstract

Has done determination levels of MgO, CaO and SiO2 in Dolimite with metodh titration. Dolomite is white brass powder. Sample that analisis is Dolomite for PT.SUCOFINDO jl.Jendral Gatot Subroto. Analysis of CaO using indicator murexide with a change of colour pink be purple on point the titrating, on the MgO using indicator EBT with a change purple into the blue on the point the titrating, and the SiO2 put into furniance on the temperature 9000C for 2 hours .The result of research obtained % MgO levels is 20%, CaO levels is 31% and SiO2 levels is 2,7% in accordance with the National Standards Indonesia (SNI) 19-0428- 1998 where the levels of MgO minimal 18%, CaO levels minimal 29% and SiO2 levels maximal 3%.