Stabilizer reactions in cast double base rocket propellants. Part II: Formation and subsequent reactions of N-nitroso derivatives of para-nitro-N-methylaniline and 2-nitrodiphenylamine in mixed-stabilizer propellants aged at 80°C and 90°C

✍ Scribed by J. M. Bellerby; M. H. Sammour

• Publisher: John Wiley and Sons
• Year: 1991
• Tongue: English
• Weight: 649 KB
• Volume: 16
• Category: Article
• ISSN: 0721-3115
• DOI: 10.1002/prep.19910160604

✦ Synopsis

Abstract

The HPLC determination of the stabilizers para‐Nitro‐N‐methylaniline (pNMA) and 2‐Nitrodiphenylamine (2NDPA) and their derivatives in two mixed‐stabilizer cast double base rocket propellants undergoing accelerated aging at 80°C and 90°C has led to the conclusion that N‐nitroso derivatives play a critical role in the stabilizer depletion processes in this type of propellant. In order to account for the principal stabilizer products in the aged propellants it is suggested that pNMA enters into an equilibrium with its N‐nitroso derivative (formed during the initial stages of aging) and that this reacts with 2NDPA in a transnitrosation reaction, to give mainly N‐nitroso‐2NDPA from which the observed C‐nitro derivatives of 2NDPA are in part generated by rearrangement and subsequent oxidation.