← Back to energy productsISO 8217:2024 · MARPOL Annex VI

Very Low Sulfur Fuel Oil

Marine residual fuel aligned with the global sulfur cap and vessel acceptance.

Commercial overview

Contract basis,
clearly defined.

VLSFO supply is structured by ISO grade and requires explicit review of compatibility, stability, cold-flow behavior, ignition quality and contaminant limits. The values below illustrate a commonly requested RMG 380 framework; ISO 8217:2024 and the signed bunker specification control.

Reference basisIllustrative RMG 380 reference
Detailed specification

Quality acceptance matrix

Values are commercial reference points—not an offer or automatic guarantee. Use the current official standard and agreed contract schedule for procurement.

ParameterReference requirementTest method / basis
Sulfur0.50% m/m maximum outside ECAsISO 8754 / 14596
Kinematic viscosity at 50°C380 mm²/s maximumISO 3104
Density at 15°C991.0 kg/m³ maximumISO 12185
Flash point60°C minimumISO 2719
Water0.50% v/v maximumISO 3733
Carbon residue18.0% m/m maximumISO 10370
Ash0.150% m/m maximumISO 6245
Vanadium350 mg/kg maximumIP 501 / 470
Sodium100 mg/kg maximumIP 501 / 470
Aluminium + silicon60 mg/kg maximumIP 501 / 470
Total sediment potential0.10% m/m maximumISO 10307-2
Hydrogen sulfide2.00 mg/kg maximumIP 570
Acid number2.5 mg KOH/g maximumASTM D664
CCAI870 maximumISO 8217 calculation
Applications

Where the product is used

  • Deep-sea vessels
  • Industrial marine boilers
  • Bunker supply programs
  • Power and heat plants designed for residual fuel
Required documents

Transaction file

  • Bunker delivery note
  • Certificate of quality
  • MARPOL retained sample record
  • Compatibility guidance
  • Q&Q and vessel-delivery documents
Primary reference

Verify the current edition

Standards are revised over time. Procurement must confirm the current edition and destination law.

IMO sulfur requirements ↗
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