The Chemistry of the Hydrazine–Hydroxylamine–Nitric Acid System at High Temperatures

Abstract

The kinetics of decomposition of hydrazine and hydroxylamine in concentrated nitric acid at 70°C establish a critical concentration [hydrazine]≈5×10^–4 mol dm^–3 below which a rapid autocalalytic decomposition of hydroxylamine occurs; this corresponds to the rate of nitrite scavenging by hydrazine balancing the rate of N₂O₄ formation.

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