Producer
Xuzhou Tiancheng Chemical Co.
Significant PCl3 producer based in Xuzhou, Jiangsu Province, China. Tiancheng Chemical operates dedicated phosphorus trichloride production units using the chlorination of white phosphorus (P4) process. Jiangsu Province's chemical industrial parks host multiple phosphorus chemistry producers serving both domestic agrochemical synthesis and pharmaceutical API manufacturing chains. Tiancheng Chemical is a registered producer under China's chemical weapons precursor reporting system per CWC obligations.
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Phosphorus Trichloride (PCl3)
70%Fine & Specialty Chemicals
30%
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Origin2023
Xuzhou Tiancheng Chemical is required under the Chemical Weapons Convention (CWC) — the international arms control treaty signed by 193 countries — to register its phosphorus trichloride (PCl3) production with Chinese national authorities and ultimately with the Organisation for the Prohibition of Chemical Weapons (OPCW). PCl3 is listed as a Schedule 2 chemical under the CWC because it is a direct precursor to nerve agents of the G-series (sarin, soman, tabun) — the same chemical reaction that combines PCl3 with isopropanol can produce either a pharmaceutical intermediate or a Schedule 1 chemical weapons agent depending on the other reagent. Tiancheng Chemical produces PCl3 for entirely legitimate agrochemical and pharmaceutical synthesis purposes; the CWC registration requirement exists because the chemistry is inherently dual-capable. The agricultural supply chain and the chemical weapons treaty enforcement system share the same regulatory attention on the same molecule from the same Xuzhou industrial park, requiring Chinese authorities and international inspectors to verify that commodity chemical production serves only legitimate civilian purposes. The farmer's herbicide supply chain and international arms control share a regulatory dependency on the same Chinese specialty chemical producers.
Organisation for the Prohibition of Chemical Weapons ↗