Diphenylthiourea from Canada
Diphenylthiourea is an aromatic thiourea derivative (C6H5-NH-CS-NH-C6H5) used as a vulcanization accelerator in rubber production and reagent in organic synthesis. It qualifies under HTS 2930.90.26.00 as a named organo-sulfur compound with thiocarbonyl group directly linked to carbon in aromatic structure. Meets chapter 29 criteria for chemically defined organic compounds.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Provide REACH/TSCA dossiers confirming <0.1% impurities; declare CAS 102-08-9 accurately
• Segregate from strong oxidizers in shipping to prevent thiourea decomposition
• Obtain EPA approvals if used in pesticide manufacturing