Stabilizer reactions in cast double base rocket propellants. Part I: HPLC Determination of Stabilizers and their derivatives in a propellant containing the stabilizer mixture para‐nitro‐N‐methylaniline and 2‐nitrodiphenylamine aged at 80°C and 90°C

Abstract

AbstractReverse phase high performance liquid chromatography (HPLC) employing an acctonitrile/methanol/water (45/10/45) mobile phase has been used to separate and quantitate the stabilizaers para‐nitro‐N‐methylaniline, (pNMA) and 2‐nitrodiphenylamine, (2NDPA) and their derivatives in a mixed‐stabilizer cast double hase rocket propellant composition undergiong acceterated aging at 80°C adn 90°C. Quantitative measurements show that pNMA is converted almost cntirely into N‐nitroso‐pNMA during the carly stages of aging and that this derivative persists for the remainder of the aging period. 2NDPA, on the other hand, reacts more slowly to give both N‐nitroso and C‐nitro derivatives.