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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
Author(s) -
Bellerby J. M.,
Sammour M. H.
Publication year - 1991
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.19910160604
Subject(s) - stabilizer (aeronautics) , nitroso , propellant , nitro , chemistry , rocket propellant , rocket (weapon) , base (topology) , polymer chemistry , derivative (finance) , medicinal chemistry , organic chemistry , alkyl , mathematics , mechanical engineering , mathematical analysis , financial economics , engineering , economics , aerospace engineering
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.