Description

Diesel fuel is a petroleum-based middle-distillate fuel formulated for suitable compression-ignition engines. Its quality is defined by the applicable market standard and the declared grade, not by its appearance or boiling range alone. Diesel grades can differ in sulfur content, cold-flow behavior, and other performance properties.

 

How is diesel fuel produced?

A refinery separates crude oil or another suitable petroleum feed into fractions according to their boiling ranges. Diesel-range material is collected and may be further treated and blended to meet the target fuel grade. Hydrotreating can reduce sulfur and other impurities; the final blend is then tested for the required properties before sale.

A diesel-range distillate is not automatically finished diesel fuel. It should be described as a specific diesel grade only when testing confirms compliance with the agreed standard, such as EN 590 or ASTM D975 where applicable.

 

What is diesel fuel used for?

Depending on its grade, approvals, and equipment requirements, diesel fuel may be used in:

• Road vehicles and commercial transport with diesel engines
• Generators and suitable industrial diesel engines
• Off-road machinery and other equipment approved for the supplied grade

Marine, road, and industrial applications can have different fuel requirements. The product specification must be matched to the equipment, intended use, and local regulations. A “10 ppm sulfur” claim must be supported by laboratory results and does not, by itself, establish full compliance with a diesel standard.

 

Key properties to check

• Sulfur content
• Density and kinematic viscosity
• Cetane number or cetane index
• Flash point and distillation range
• Water and sediment
• Relevant cold-flow properties

Review the product specification and a recent Certificate of Analysis for each grade and shipment.

 

Availability & specification

Product availability and the specification of a particular diesel grade vary by supplier. Contact our team for the declared grade, standard compliance documentation, Certificate of Analysis, current pricing and delivery options.

Technical references: U.S. Energy Information Administration — “Refining crude oil: the refining process” and “Large reduction in distillate fuel sulfur content has only minor effect on energy content”; ASTM International — “D975 Standard Specification for Diesel Fuel”.