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"TDI (toluene diiocyanate) serves as a hardener in the manufacture of composite propellant. The manufacture of TDI steps are long enough, one of which is the formation of toluene dicarbamate which will be decomposed to form TDI. To make toluene dicarbamate own needs an organic carbonate compound as the reactan. Then, the study of organic carbonates need to be done to choose the suitable one of the process and easy in manufacture and availability of the basic materials. Study results obtained the manufacture of organic carbonates (dimethyl carbonate) with the basic materials of methanol and urea. Reactions were carried out in autoclave reactor equipped with magnetic stirrer and reflux column to separate ammonia. Reaction run at T = 180ºC, with a catalyst of CaO-Carbon alloys."

"One of military rocket propellant main components is nitrocellulose. Nitrocellulose is made by nitration reaction with nitrating agent mixture of nitric acid and sulphuric. The most important Nitrocellulose quality is nitrogen content. Determination of nitrogen content by using of instrumentation is avoided because of explosive material. Therefore we looked for the appropriate method. We conducted a study of nitrogen content related with the properties. From these properties We can determine the nitrogen content. From some of methods used, we can take a precise data and so can substitute a test from instrumentation."