Cetane improvers are fuel additives that raise the cetane number of diesel fuel. The cetane number controls how fast diesel ignites under compression. A low cetane number causes ignition delay. During that delay, unburned fuel builds up in the combustion chamber. It then ignites all at once, in an uncontrolled pressure spike. Engine designers call this diesel knock. It wastes energy, stresses engine components, and generates excess exhaust emissions. A cetane improver eliminates ignition delay. Combustion becomes faster and more complete. The engine runs quieter, burns less fuel, and emits less nitrogen oxides and particulate matter.

Refineries and fuel blending terminals need cetane improver additives when their diesel falls below specification. High-aromatic crude fractions and hydrocracked distillates often produce low cetane quality naturally. A certified cetane improver corrects this without changes to the refinery process. The additive works at treat rates between 200 and 2 000 ppm. It raises the cetane number without affecting density, viscosity, or cold flow. This brings finished fuel into compliance with EN 590 and Euro VI emission standards, as well as ASTM D975 and IMO MARPOL Annex VI for marine fuels. The cetane improver PETRONAX supplies is INTRON® cTane. It uses 2-ethylhexyl nitrate (2-EHN) as its active compound. 2-EHN is the most proven cetane-improving substance in industrial fuel production. INTRON® cTane works across all diesel grades: road, off-road, marine, and arctic. It reduces NOx output by up to 15% and significantly lowers particulate matter. PETRONAX supplies it in IBC and ISO tank containers from bonded storage in Europe. Every shipment includes SDS, Certificate of Analysis, and REACH documentation. Read more about INTRON® cTane product details or contact PETRONAX to request a dosage recommendation for your fuel.