METHODS FOR ELIMINATION OF CORROSION PRODUCTS OF NITROGEN TETROXIDE.
Quarterly progress rept. no. 3, 1 Nov 66-31 Jan 67,
ROCKETDYNE CANOGA PARK CA RESEARCH DIV
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The dissolution of iron powder and 1018 carbon steel in anhydrous N2O4 at 30 and 50 C was studied. The concentrations of soluble iron reaches a final limit of less than 1 ppm in terms of iron which indicates that a solubility limit is reached and a completely insoluble film is not formed. The effect of added water was also studied. Solubility studies of the synthetic flow-decay compound NOFeNO34 in freshly distilled, anhydrous, iron-free N2O4, over the temperature range 32 to 100 F, have been conducted. Solubility studies of this iron nitrate in N2O4 in the presence of small concentrations of nitric oxide 0 to 1 wo and water 0.1 and 0.5 wo have also been conducted. In all cases the solubility has been found to be quite low, on the order of a few ppm in terms of iron concentration. Investigations of appropriate coordinating agents as means of eliminating flow-decay compounds have been conducted. Many reagents of different types have been found which readily dissolve the synthetic iron nitrate. The search for additional reagents is being continued. Author
- Inorganic Chemistry