Taiwan’s Ministry of Environment Adds Perfluorohexane Sulfonic Acid as Toxic Chemical

On 24 April, 2024, in compliance with the Stockholm Convention, Taiwan’s Ministry of Environment (MOE) added perfluorohexane sulfonic acid and its related compounds as toxic chemicals. This amendment aims to strengthen the regulation of perfluoroalkyl compounds and set a stricter control to prevent environmental pollution and human harm.

Details of the New Regulation

Perfluorohexane sulfonic acid and its related compounds are now categorised as Class I toxic chemicals and are subject to management regulations. Additionally, perfluorooctane sulfonic acid (PFOS), its lithium salt (PFOS-Li), perfluorooctanesulfonyl fluoride (PFOSF), and perfluorooctanoic acid (PFOA) will be phased out from Class B fire-fighting foam equipment in accordance with the Stockholm Convention's deadline.

Sales and Import Ban

Regarding the sales of sulfonic acid, its salts and related compounds, currently there is a comprehensive ban on manufacturing, sales and import. However, exemptions will be made for research, testing and relevant educational purposes.

Environmental and Human Health Protection

To mitigate the harmful impact on environment and human from perfluoro and polyfluoroalkyl substances (PFAS), the administration has regulated PFOS, PFOS-Li, PFOSF and PFOA as toxic chemicals in accordance with the law. This amendment will strengthen the regulation of PFASs, exert a stricter control and eliminate their use in current firefighting foam equipment for Class B fires according to the deadline of the Stockholm Convention.