Refined Products, Gasoline
September 04, 2025
Platts amends FOB Singapore non-oxygenated 91 RON gasoline specifications from Jan 2, 2026
Platts, part of S&P Global Commodity Insights, will amend the specifications for its non-oxygenated 91 RON gasoline on FOB Singapore basis, effective Jan. 2, 2026, after reviewing market feedback gathered during a wider consultation on Singapore gasoline specifications.
The consultation was announced in a subscriber note published on Jan. 27, 2025, available here: https://www.spglobal.com/commodity-insights/en/pricing-benchmarks/our-methodology/subscriber-notes/012725-platts-opens-consultation-on-fob-singapore-gasoline-specifications .
This decision follows a proposal note published May 23 here: https://www.spglobal.com/commodity-insights/en/pricing-benchmarks/our-methodology/subscriber-notes/052325-platts-proposes-to-amend-fob-singapore-non-oxygenated-91-ron-gasoline-specifications-from-jan-2-2026 .
The changes to the Gasoline Unl 91 Non-oxy FOB Spore Cargo specifications broadly reflect upcoming changes by Australia, the region's largest non-oxygenated gasoline importer, to improve gasoline specification standards in the country.
In line with market feedback gathered during the consultation, Platts is not making any changes to the specifications reflected in its benchmark FOB Singapore RON 92, RON 95 and RON 97 assessments at this time.
FOB Singapore RON 91 non oxy specifications
| Property | Unit | Current Standard | Standard reflected from Jan 2, 2026 | Test Methods |
| Research Octane Number (RON) | - | Min 91 | Min 91 | ASTM D-2699 |
| Motor Octane Number (MON) | - | Min 81 | Min 81 | - |
| Lead content | gPb/l | Max 0.013 | Max 0.005 | ASTM D-5059 / ASTM D-3237 |
| Phosphorus Content, mg/L | mg/l | - | Max 1.3 | ASTM D4047-18 |
| Density@15°C | g/ml | Report | Report | - |
| Reid Vapor Pressure | psi | Max 9 | Max 9 | ASTM D-323 / ASTM D-5191 |
| Distillation | - | - | - | ASTM D-86 |
| Initial Boiling Point | °C | Report | Report | - |
| 10% evaporated | °C | Max 65 | Max 58 | - |
| 50% evaporated | °C | Min 74, Max 115 | Min 77, Max 110 | - |
| 90% evaporated | °C | Max 183 | Max 183 | - |
| Final Boiling Point | °C | Max 215 | Max 210 | ASTM D-86 |
| Residue | % vol | Max 2.0 | Max 2.0 | - |
| Loss | % vol | 2 | 2 | - |
| Odor | - | Marketable | Marketable | - |
| Existent gum | mg/100ml | Max 4 | Max 4 | ASTM D-381 |
| Benzene content | % vol | Max 1 | Max 1 | ASTM D-5580 |
| Sulfur | % wt | Max 0.015 | Max 0.001 | ASTM D-4294 / ASTM D-5453 / ASTM D-2622 |
| Doctor Test | - | Negative | Negative | ASTM D-4952 / IP 30 |
| or Mercaptan sulfur | wt. ppm | Max 15 | Max 15 | ASTM D-3227 |
| Mercaptan sulfur | % wt | Max 0.0015 | Max 0.0015 | ASTM D-3227 |
| Copper corrosion (3 hours at 50°C) | - | Max 1 | Max 1 | ASTM D-130 |
| Silver corrosion (3 hours at 50°C) | - | - | Max 1 | ASTM D7671-21 |
| Induction period | minutes | Min 360 | Min 360 | ASTM D-525 |
| Oxygenates as components | % vol | Nil | Nil | ASTM D-4815 |
| Oxygenates as contaminants | % vol | Max 1.0 | Max 1.0 | ASTM D-4815 |
| Aromatics | % vol | 17-42 | 17-35 | ASTM D-1319 / ASTM D-5580 |
| Olefins | % vol | Max 18 | Max 18 | ASTM D-1319 |
| Color | - | Undyed | Undyed | - |
| Alcohol | - | No addition of any alcohol | No addition of any alcohol | ASTM D-4815 |
| Metallic Additives | - | None added | None added | ASTM D-3831 |
| Acetone | ppm | Max 100 | Max 100 | ASTM D-4815 |
Platts periodically reviews the specifications of all its assessments to ensure they are representative of the most tradeable grades.
Such reviews may lead to changes to the existing specifications of an assessment, though any changes would be subject to further industry consultations ahead of any final decision.
Platts last updated the specifications of these assessments on April 2, 2018.
The current specifications for the Platts Singapore gasoline assessments can be found here: https://www.spglobal.com/commodityinsights/plattscontent/_assets/_files/en/our-methodology/methodology-specifications/asia-refined-oil-products-methodology.pdf .
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