Nitrogen

Used in resource extraction, gas creation and unit production. Inert.
Overview

In-game properties reported across sources give 

Practical notes and interactions:
Nitrogen functions primarily as an industrial fluid rather than a combat material; its non-flammable, non-explosive nature makes it safe to route near power lines and most production chains without risk of combustion or detonation.
- Several turret types accept
Nitrogen as ammo; when building defenses that rely on liquid ammunition, confirm the turret recipe lists
Nitrogen among acceptable liquids.
- Use pipelines, pumps, and buffering tanks to stabilize
Nitrogen flow between extractors, gas-processing structures, and factories that consume it; its moderate viscosity and heat capacity affect how quickly it moves and how it stores thermal energy compared to other liquids.
Nitrogen appears on maps such as Erekir and can be harvested or produced depending on terrain and available processing blocks present on that planet.
- Technical references:
Nitrogen’s localization key in game files is liquid.nitrogen.name, which can be useful when inspecting mods or localization packs.
Real-world context noted in documentation: 

Official description
Used in resource extraction, gas creation and unit production. Inert.