Quantitative Liquid Chromatographic Analysis of Propellants Containing Nitroglycerin

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Abstract
A rapid quantitative liquid chromatographic method has been developed for analyzing nitrocellulose-base propellants for nitroglycerin, plasticizers, and stabilizers. The method provides analyses for nitroglycerin, various phthalate esters, and ethyl centralite (EC). It is also useful in observing degradation of such propellants, since the primary nitration product of EC (the propellant stabilizer) may also be determined. Separation of all components was achieved in less than 23 minutes by using a 1.0 m × 2.1 mm precision-bore stainless steel column packed with 30- to 44-micron Vydac adsorbent. The mobile phase consisted of 1,1-dichloroethane. Acetanilide was used as an internal standard, and peak areas were determined by an electronic digital integrator. The coefficient of variation of the test method was considerably less than 1 percent.

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