Ignition delays of alkyl thiophosphites with white and red fuming nitric acids within temperature range 80 to -105 F

Miller, Riley O., Ladanyi, Dezso J.
naca-rm-e52k25
1953


Ignition delays of alkyl thiophosphites were obtained in a modified open-cup apparatus and a small-scale rocket engine apparatus. At -40 F, mixed alkyl thiophosphites gave short delays with white fuming nitric acid containing 2 percent water and red fuming nitric acids of widely varying compositions. At -40 F and higher, triethyl trithiophosphite blended with as much as 40 percent n-heptane gave satisfactory self-igniting properties at temperatures as low as -76 F.

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