Tongsuh Petrochemical

Tongsuh Petrochemical, a wholly-owned subsidiary of Asahi Kasei, is a major global manufacturer of acrylonitrile and high-purity acetonitrile based in South Korea. The company operates one of the world's largest acrylonitrile production facilities in Ulsan, leveraging advanced catalyst technology to maintain a leading market position. For the life sciences and pharmaceutical sectors, Tongsuh is a critical supplier of high-purity acetonitrile, an essential solvent used in high-performance liquid chromatography (HPLC) and the synthesis of DNA and oligonucleotides. Beyond solvents, the company produces sodium cyanide and ammonium sulfate for diverse industrial applications. Its strategic integration with Asahi Kasei's global supply chain makes it a key player in the chemical precursors market for both industrial and laboratory use.