Diphenylurea from Canada
Diphenylurea (symmetrical diarylurea) is used in explosives, dyes, and pharmaceuticals as a ureine derivative. HTS 2924.21.50.00 covers it as 'other' ureines and derivatives; salts thereof under Chapter 29 organic compounds.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• ATF Form 5400.4 if explosive precursor end-use suspected
• DSC thermal stability data required for safe transport classification
• Purity >99% HPLC confirmation prevents mixture classification