Nitrogen trioxide

Nitrogen trioxide (CAS 10544-73-7), also known as dinitrogen trioxide, is an unstable nitrogen oxide that functions as a reactive oxidizing intermediate in industrial chemical processes.

Where is Nitrogen trioxide used?

• Nitric acid production and nitrogen oxide chemistry: key oxidant and pH-influencing species in aqueous systems
• Water treatment: oxidative disinfection and pH regulation within nitrous acid equilibria
• Pulp and paper: selective oxidation that brightens cellulose fiber without chlorine-based agents
• Mining and metals processing: corrosion-inhibiting behavior in acidic leach circuits
• Industrial and institutional cleaning: oxidizing capacity in heavy-duty descaling and surface preparation
• It is generated on-site or in-process from nitrogen oxide precursors and nitric acid systems.

Good to know: Nitrogen trioxide is not commercially supplied as an isolated, stable product. Buyers typically source it indirectly through nitric oxide supply chains, with technical-grade nitrogen oxides available in pressurized cylinders or bulk liquid form.