1 Name#
This instrument is the Fuel Quality Standards (Conventional Diesel) Determination 2025.
3 Authority#
This instrument is made under section 21 of the Fuel Quality Standards Act 2000.
4 Definitions#
Note: A number of expressions used in this instrument are defined in section 4 of the Fuel Quality Standards Act 2000, including fuel.
In this instrument:
conventional diesel means all fuel supplied or represented as automotive diesel, excluding paraffinic diesel.
conventional diesel/paraffinic diesel blend means a fuel that is a blend of conventional diesel and paraffinic diesel and has a density of between 765 kg/m3 and less than 820 kg/m3 at 15°C.
Note: The density is to be determined in accordance with item 7 of the table in subsection 6(2) of this instrument.
EN followed by a numeric code means the testing method developed under that code by the European Committee for Standardization.
IP followed by a numeric code means the testing method developed under that code by the chartered professional body called the Energy Institute.
mg/kg means milligrams per kilogram, and is equivalent to ‘parts per million’ or ‘ppm’ by mass.
% m/m means per cent mass by mass, and is equivalent to ‘mass %’, ‘% mass’ and ‘weight %’.
paraffinic diesel has the same meaning as in the Fuel Quality Standards (Paraffinic Diesel) Determination 2025.
% v/v means per cent volume by volume, and is equivalent to ‘volume %’, ‘vol %’ and ‘% vol’.
6 Fuel standard for conventional diesel#
(1)In relation to a parameter mentioned in an item of the following table, conventional diesel and conventional diesel/paraffinic diesel blends must comply with the relevant specification for that parameter mentioned in that item.
(2)For subsections (1) and (6), compliance with the specification for a parameter is determined by using the testing method for that parameter mentioned in that item of the table.
| Fuel standard for conventional diesel and conventional diesel/paraffinic diesel blends | |||
|---|---|---|---|
| Item | Parameter | Specification | Testing Method |
| 1 | Ash | 0.01% m/m maximum | ASTM D482 |
| 2 | Biodiesel | 5.0% v/v maximum | EN 14078 |
| 3 | Carbon residue—10% distillation residue | 0.2% m/m maximum | ASTM D4530 |
| 4 | Cetane index | for conventional diesel not containing biodiesel: 46 minimum | ASTM D4737 Procedure A |
| 5 | Conductivity at ambient temperature | for conventional diesel and conventional diesel/paraffinic diesel blends held by a terminal or refinery for sale or distribution: 50 pS/m minimum at ambient temperature | ASTM D2624 |
| 6 | Copper corrosion—3 h at 50°C | Class 1 | ASTM D130 |
| 7 | Density at 15°C | (a) for conventional diesel: 820–850 kg/m3(b) for conventional diesel/paraffinic diesel blends: between 765 and less than 820 kg/m3 | ASTM D1298 |
| 8 | Derived cetane number | (a) for conventional diesel and conventional diesel/paraffinic diesel blends containing biodiesel: 51 minimum;(b) for conventional diesel/paraffinic diesel blends not containing biodiesel: 46 minimum | ASTM D6890 |
| 9 | Distillation—T95 | 360°C maximum | ASTM D86 |
| 10 | Flash point | Between the day the Fuel Quality Standards (Conventional Diesel) Amendment Determination (No. 1) 2026 commences and 30 June 2027: 60.5°C minimumBeginning on 1 July 2027: 61.5°C minimum | ASTM D93 |
| 11 | Filter blocking tendency | 2.0 maximum | IP 387 |
| 12 | Kinematic viscosity | 2.0–4.5 mm2/s at 40°C | ASTM D445 |
| 13 | Lubricity | (a) for conventional diesel: 460 µm maximum;(b) for conventional diesel/paraffinic diesel blends containing 50% or more conventional diesel: 460 µm maximum(c) for conventional diesel/paraffinic diesel blends containing less than 50% conventional diesel: 400 µm maximum | IP 450 |
| 14 | Oxidation stability | 2.5 mg/100 mL maximum | ASTM D2274 |
| 15 | Polycyclic aromatic hydrocarbons | 11% m/m maximum | IP 391 |
| 16 | Sulfur | 10 mg/kg maximum | ASTM D5453 |
| 17 | Water and sediment | 0.05% v/v maximum | ASTM D2709 |
| 18 | Water | for conventional diesel and conventional diesel/paraffinic diesel blends containing biodiesel: 200 mg/kg maximum | ASTM D6304 |
(3)Any biodiesel component of conventional diesel must meet the requirements of section 6 of the Fuel Quality Standards (Biodiesel) Determination 2025 prior to being blended with conventional diesel.
(4)Any biodiesel that is blended with a conventional diesel/paraffinic diesel blend must meet the requirements of section 6 of the Fuel Quality Standards (Biodiesel) Determination 2025 prior to being blended with the conventional diesel/paraffinic diesel blend.
(5)Any conventional diesel component of a conventional diesel/paraffinic diesel blend must meet the requirements of this instrument prior to being blended with paraffinic diesel.
(6)Any paraffinic diesel component of a conventional diesel/paraffinic diesel blend must meet the definition of paraffinic diesel set out in the Fuel Quality Standards (Paraffinic Diesel) Determination 2025 and the relevant specification for each parameter mentioned in an item of the following table prior to being blended with conventional diesel.
| Requirements for a paraffinic diesel component of a conventional diesel/paraffinic diesel blend | |||
| Item | Parameter | Specification | Testing Method |
| 1 | Density at 15°C | 765–810 kg/m³ | ASTM D1298 |
| 2 | Derived cetane number | 51 minimum | ASTM D6890 |
| 3 | Distillation:(a) % v/v recovered at 250°C;(b) % v/v recovered at 350°C;(c) T95 | (a) for % v/v recovered at 250°C: 65% v/v maximum;(b) for % v/v recovered at 350°C: 85% v/v minimum;(c) for T95: 360°C maximum | ASTM D86 |
Sourced from the Federal Register of Legislation at legislation.gov.au, © Commonwealth of Australia, licensed under CC BY 4.0. Compilations may have been reformatted.