Inert Protection for Pipelines and Reactors: This covers API synthesis, fermentation facilities, and processes involving flammable or explosive solvents (such as ethanol, methanol, and acetone). Nitrogen purging within reactors displaces air to prevent explosions; it also creates an oxygen-free environment for hydrogenation and catalytic reactions, thereby safeguarding product purity. Furthermore, nitrogen provides full inerting protection throughout solvent recovery and distillation processes.

Cleanrooms / Compressed Gas Supply: This includes instrument air, pneumatic actuators for valves, and gas supply for cleanroom equipment.
The gas is free of water, oil, and oxygen, ensuring it does not contaminate clean zones or sterile environments.

Cold Storage, Cold Chain Logistics, and Packaging: This involves nitrogen flushing for blister packs (aluminum-plastic packaging) and within pharmaceutical vials. This creates an oxygen barrier to inhibit bacterial growth, prevent moisture ingress and insect infestation, and extend product shelf life.

The primary functions of nitrogen in pharmaceuticals are: removing oxygen from liquid medications to prevent spoilage; providing nitrogen blanketing in tank farms to ensure quality stability; inerting solvents to ensure safety and prevent explosions; and serving as a protective gas for sterile and cleanroom environments.