The HH (35 mass% hydroxylamine hydrochloride/ water solution) and HH-ind (stabilized 35 mass% hydroxylamine hydrochloride/water solution for industrial use) decomposition reaction has an onset temperature of similar to 145 degrees C. The measured gas phase decomposition products are 0.25 mol N-2 and 0.06 mol O-2 per mol of hydroxylamine hydrochloride with small quantities of N2O and H-2, and a trace amount of NO for a total noncondensable gas production of similar to 0.39 mol/mol of hydroxylamine hydrochloride. The reaction system is tempered by the evaporation of the solvent (water) and the reaction is drastically catalyzed by stainless and carbon steel.