It is the additive for heavy vehicles used by the main European truck manufacturers.
AdBlue® is an aqueous solution of synthetic urea that responds to the chemical formula CO (NH2) 2. This component allows the reduction of nitrogen oxides (NOx) produced at the time of combustion. AdBlue® converts them into nitrogen (N2) and water (H20), naturally occurring and non-polluting components. It is a non-toxic product composed of 31.5% urea and 68.5% water.