September 2025 The U.S. Department of the Treasury and Internal Revenue Service approved the addition of tridecyl alcohol to the federal list of taxable chemical substances. The determination followed a petition submitted by Exxon Mobil Corporation and recognized tridecyl alcohol produced through the oxonation process using propylene, amylene, carbon monoxide, and hydrogen.
May 2025 Exxon Mobil Corporation filed a regulatory petition requesting the addition of tridecyl alcohol to the U.S. list of taxable substances. The filing identified ExxonMobil as an exporter of the chemical and described its use in surfactant formulations and its predominant production through oxonation.