Diphenylurea from Mexico
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 — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
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