EN 590 Diesel Specifications: A Buyer's Guide

EN 590 is the European standard for automotive diesel fuel — and one of the most traded petroleum products globally. If you're sourcing diesel for European distribution, refinery blending, or international supply, understanding EN 590 specifications is non-negotiable.

This guide covers the technical spec, quality parameters, sulphur grades, and the practical factors that affect pricing and sourcing.

What Is the EN 590 Standard?

EN 590 is a fuel standard published by the European Committee for Standardisation (CEN) — specifically under the designation EN 590:2022 (updated periodically). It defines the properties that road diesel must meet for use in European markets and is enforced in all EU member states as well as EEA countries (Norway, Iceland, Liechtenstein) and the United Kingdom (retained as BS EN 590).

When traders refer to EN 590 diesel, they typically mean ultra-low sulphur diesel (ULSD) conforming to this standard — most commonly the 10ppm (Class 1) grade used in modern diesel engines.

Key EN 590 Specifications

The standard defines numerous physical and chemical properties. The most commercially significant are:

Sulphur Content

• EN 590 10ppm (Class 1): Maximum 10 mg/kg sulphur — the standard grade for European road transport. Required in the EU since 2009.
• EN 590 50ppm: Maximum 50 mg/kg — still accepted in some emerging markets but not EU-compliant for road use
• EN 590 500ppm: Maximum 500 mg/kg — heating oil or off-road applications only

For European road use, 10ppm is the only compliant grade. Any supplier offering "EN 590" without specifying sulphur content should be asked explicitly.

Cetane Number

Minimum cetane index: 46 (measured by ASTM D4737 or EN ISO 4264). A higher cetane number indicates better ignition quality and cleaner combustion. Premium grades often test at 51–55. Low cetane causes rough starting, noise, and emissions non-compliance.

Flash Point

Minimum 55°C. This is the temperature at which diesel vapour becomes ignitable — critical for transport safety classification. Below this threshold, the fuel cannot be legally transported or stored as a Class III flammable liquid.

Density at 15°C

Range: 820–845 kg/m³. Density affects volumetric energy content and is critical for accurate invoicing (most petroleum trades are priced per metric ton, but delivered in cubic metres). Density certificates from the SGS or Intertek inspection are standard in any physical delivery.

Viscosity

Range: 2.0–4.5 mm²/s at 40°C. This affects fuel pump performance and atomisation in the engine. Out-of-spec viscosity is a common sign of blending with lower-quality products.

Cold Flow Properties (CFPP)

The Cold Filter Plugging Point (CFPP) is the EN 590 characteristic most subject to regional variation. EN 590 defines different maximum CFPP values by climate zone:

• Temperate zones (Class B): max +5°C
• Cold zones (Class 2): max −10°C
• Arctic zones (Class 3): max −20°C
• Severe arctic (Class 4): max −44°C

Buyers sourcing for winter supply or northern European distribution must specify the CFPP class explicitly — standard summer-grade EN 590 will gel in Finnish or Swedish temperatures.

Polycyclic Aromatic Hydrocarbons (PAH)

Maximum 8% m/m. PAH content affects particulate emissions and is increasingly regulated in Euro 6 emission zones. Lower PAH generally indicates a higher-quality refinery output.

Water and Sediment Content

Maximum 200 mg/kg water. Water contamination is one of the leading causes of fuel system damage in end users. Always require a water and sediment test as part of the SGS inspection report.

How EN 590 Is Priced

EN 590 diesel pricing in international trade is almost always referenced to the Platts CIF NWE (Cargoes) assessment or the Argus ARA (Amsterdam-Rotterdam-Antwerp) barge quotes. Deals are typically structured as:

Price = Platts CIF NWE (date of loading) + [premium or discount] USD/MT

Premiums or discounts vary by volume, delivery term, payment method, and supply source. A 100,000 MT CIF delivery from a major refinery will trade closer to flat Platts; a 5,000 MT ex-tank spot deal may carry a $15–25/MT premium.

Documentation Buyers Must Request

When sourcing EN 590, standard documentation for every cargo includes:

• ✅ Certificate of Quality (CoQ) — full spec test against EN 590 parameters
• ✅ Certificate of Quantity (CoQ) — in MT and litres at observed temperature
• ✅ SGS or Intertek Independent Inspection Report — mandatory for any serious buyer
• ✅ Bill of Lading (for maritime shipments)
• ✅ Certificate of Origin
• ✅ SDS (Safety Data Sheet)
• ✅ Tank receipt / terminal certificate for ex-tank deals

Common EN 590 Sourcing Mistakes

• Not specifying the sulphur class — always state 10ppm if you need EU road compliance
• Accepting a price without a pricing date — Platts moves daily; "Platts" without a fixing date is commercially unenforceable
• Skipping independent inspection — a supplier's own CoQ is not sufficient; always require a third-party SGS/Intertek cert
• Ignoring CFPP for seasonal supply — ordering summer-grade for a Q1 delivery into Northern Europe
• Not verifying the refinery of origin — some offers are rebranded product that has been adulterated; traceable refinery certs matter

Source EN 590 with Confidence

Ja-Cari Energy sources EN 590 10ppm, 50ppm, and other petroleum products through verified refinery and buyer-direct channels. Every deal includes full SGS inspection, standard trade documentation, and KYC compliance from initiation to delivery.

Ready to submit a sourcing inquiry? Start your inquiry with Lizzy → — specify your product, volume, delivery port, and timeline. Our team responds with a verified offer.

Quick Reference: EN 590 Key Parameters