Standard Practice for Hydrotreated Renewable Jet (HRJ) Fuels

ASTM D1566

ASTM D1566 is an internationally recognized standard that relates to the testing and specification of Hydrotreated Renewable Jet (HRJ) fuels. Developed by the American Society for Testing and Materials (ASTM), this standard aims to ensure uniform standards for the characterization and use of sustainably produced jet fuel.

Airplane at dock

With the increasing interest in renewable energy sources, the aviation industry has been looking for environmentally friendly alternatives to conventional kerosene. ASTM D1566 provides a standardized framework for Hydrotreated Renewable Jet (HRJ) fuels.

Scope of application

The standard specifies the requirements for HRJ fuels that are produced by hydrotreating processes from sustainable raw materials such as vegetable oils or animal fats. This fuel is intended to serve as an environmentally friendly alternative to conventional kerosene in the aviation industry.


ASTM D7566 defines detailed parameters, including physical and chemical properties, that HRJ fuels must meet. This ensures that they meet aircraft compatibility and flight safety requirements.

Test procedures

The standard describes the test procedures for determining properties such as density, viscosity, flash point and composition to ensure that HRJ fuels meet the specified standards.


By applying ASTM D1566, manufacturers, aviation companies and regulators can ensure that HRJ fuels can be used safely and effectively in the aviation industry. This promotes the development and integration of sustainable fuels that help reduce the environmental impact of aviation.

ASTM D1566 is a critical standard for the specification of Hydrotreated Renewable Jet (HRJ) fuels. By providing clear guidelines for the production and use of these renewable fuels, the standard contributes to the promotion of environmental compatibility and sustainability in the aviation industry.