Effects of ammonium sulfate and ammonium phosphate on flammability effectsofammoniu121geor Year: 1972 • (NHj2HPO„ ▲ (NH4)2S04 J I L 8000 6000 4000 d z> 2000 e 1000 500 200 1 2 3 5 7 10 15 20 25 Grams of chemical per square foot Figure 12.—Effect of (NHk)2HP0k and (NH^)2SOk on the rate of weight loss or equivalent energy release rate in excelsior fuel. 200 r 160 - 120 - 80 - 40 -, • (NH^HPO A(NH4)2SQ4 IS J L -L J L 6 8 10 12 Grams of chemical per square fcot 14 16 Figure 13.—Effect of (NHi+) 2HP0i^ and (NHn)2S0^ on the residue in pine needle fuel. 1 !

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