N-Methylaniline

In the SGS Worldwide Fuel Survey (WWFS) of 2019, the gasoline test results in Libya during the summer sampling showed an average concentration of N-methylaniline (NMA) of 3.4 to 4.7%m/m (1,000 times more than the typical concentrations seen in aniline derivatives) in the five samples studied throughout the country.

NMA used to be a popular octane booster in Russia, but it got phased out in mid-2016. It is still a popular octane enhancer in other Commonwealth of Independent States (CIS) countries, e.g. Kazakhstan and Uzbekistan, where there are problems to source locally produced MTBE.

The SGS WWFS has also noted NMA content in some European countries such as Romania, Croatia, Ireland or Italy. In the United States, NMA has not been found in recent years.

According to different