Accession Number : AD0808283

Title :   METHODS FOR ELIMINATION OF CORROSION PRODUCTS OF NITROGEN TETROXIDE.

Descriptive Note : Quarterly progress rept. no. 3, 1 Nov 66-31 Jan 67,

Corporate Author : ROCKETDYNE CANOGA PARK CA RESEARCH DIV

Personal Author(s) : Cain, E. F. C. ; Axworthy, A. E. ; Fujikawa, C. ; Rodriguez, S.

Report Date : FEB 1967

Pagination or Media Count : 37

Abstract : 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 NOFe(NO3)4 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 w/o) and water (0.1 and 0.5 w/o) 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)

Descriptors :   *TETROXIDES), (*NITROGEN COMPOUNDS, (*CORROSION INHIBITION, REACTION KINETICS), STEEL, IRON, IRON COMPOUNDS, NITRATES, SOLUBILITY, IDENTIFICATION, NITROGEN OXIDES.

Subject Categories : Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE