ASTM establishes the first worldwide quality standard for ethanol, a low-carbon fuel

ASTM International’s petroleum products, liquid fuels, and lubricants committee has released the first global quality standard for low-carbon fuel ethanol. The new specification is expected to simplify international trade and encourage broader adoption of cleaner transportation fuels.

The standard, designated ASTM D8651, defines quality requirements for undenatured fuel ethanol—a renewable, low-carbon fuel currently used in nearly 60 countries. Until now, the fuel has been governed mainly by regional specifications, which vary significantly between markets.

Unlike denatured ethanol that is typically blended into petrol at service stations, undenatured fuel ethanol contains no additives intended to make it undrinkable. Because it does not rely on a fixed denaturant chemistry, its quality parameters can be standardised internationally. This allows, for the first time, the establishment of a unified global specification for fuel-grade ethanol that different countries can produce, trade, and blend while maintaining consistent quality.

Importance of the new standard

Ethanol has long been blended with petrol to help improve air quality and reduce emissions. In recent years, it has also gained importance as a cleaner octane enhancer and, in certain regions, as a clean cooking fuel. Given that ethanol feedstocks are widely available around the world and more countries are implementing low-carbon fuel programmes, demand for harmonised fuel standards has been increasing.

Previously, the absence of a unified specification meant that producers, traders, and regulators had to comply with multiple regional requirements. The introduction of ASTM D8651 addresses this challenge by providing a common quality framework that can facilitate global production, trade, and distribution of fuel ethanol.

According to Kristy Moore, chair of the ASTM D02.93 coordinating subcommittee on international standards and related activities, the specification is the first to define detailed quality expectations for undenatured fuel ethanol specifically for global markets. She noted that as more countries introduce low-carbon fuel programmes, a harmonised specification can help make ethanol a globally tradable fuel, simplify import and export processes, and provide guidance to manufacturers on the quality standards required for the fuels sector.

Moore also highlighted that the new specification contributes to United Nations Sustainable Development Goal 7 – Affordable and Clean Energy. Ethanol meeting the new standard can be used not only in transportation fuels but also as a clean cooking fuel, potentially expanding its impact beyond the transport sector.

ASTM International is a globally recognised standards development organisation with more than 12,000 active standards across a wide range of industries. Its specifications play an important role in improving product performance, ensuring safety, and strengthening consumer confidence worldwide.

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