Ammonium nitrate (310230) and related mixtures are classified as explosive precursors and are subject to EPA Risk Management Program requirements and DHS Chemical Facility Anti-Terrorism Standards (CFATS) reporting thresholds. Importers must also comply with DOT hazardous materials transport regulations. These obligations are separate from and in addition to standard CBP entry requirements.

Antidumping duty orders have historically covered certain nitrogenous fertilizer products from Russia, including urea and ammonium nitrate. The scope of each order is defined by the specific product description and HTS line; importers should review the applicable Commerce Department scope rulings and confirm whether their product falls within the order before entry to avoid unexpected duty liability.