AdBlue is injected into the exhaust stream of a diesel engine. When exposed to high exhaust temperatures, it breaks down into ammonia, which reacts with NOx gases over the SCR catalyst to produce nitrogen and water, significantly reducing emissions.

Yes, AdBlue is non-toxic, non-flammable, and biodegradable. However, it can corrode certain metals, so it’s important to store and handle it properly to avoid contamination.