HS 293359 Other

For products classified under Harmonized System (HS) subheading 2933.59 ('Other' heterocyclic compounds with nitrogen hetero-atom(s) only, containing an unfused pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure), the Most Favored Nation (MFN) duty rate for imports into the United States is 6.5% ad valorem. This rate applies to goods from countries without specific trade agreements or preferential programs with the U.S. Importers should consult the current Harmonized Tariff Schedule of the United States (HTSUS) via the USITC website for the most up-to-date and authoritative information.

Yes, preferential duty treatment is available for HS 2933.59 under various U.S. Free Trade Agreements (FTAs) and special programs. For eligible goods originating from countries such as Australia (AU), Bahrain (BH), Chile (CL), Colombia (CO), Israel (IL), Jordan (JO), Korea (KR), Morocco (MA), Oman (OM), Panama (PA), Peru (PE), and Singapore (SG), the duty rate is 'Free' (0.00%). This preferential treatment is typically indicated by a special program indicator (e.g., 'A', 'AU', 'BH', etc.) in the HTSUS. To claim these rates, importers must ensure the goods meet the specific rules of origin requirements of the respective agreement and provide proper documentation, such as a certificate of origin, to U.S. Customs and Border Protection (CBP).

HS 2933.59 is a residual 'Other' subheading within heading 2933, which covers 'Heterocyclic compounds with nitrogen hetero-atom(s) only'. The primary classification criteria for 2933.59 are that the compound must be a heterocyclic compound containing nitrogen as the only hetero-atom(s) and must contain an unfused pyrimidine ring (whether or not hydrogenated) or a piperazine ring in its structure. Crucially, it must not be specifically provided for in any of the more specific subheadings of 2933.51 through 2933.55 (e.g., Malonylurea (barbituric acid) and its salts, Allantoin, etc.). Classification requires a detailed chemical analysis of the compound's structure to confirm the presence of the specified rings and the absence of other qualifying features for more specific subheadings. WCO Explanatory Notes for Chapter 29 provide further guidance.

Standard import documentation for chemical products under HS 2933.59 includes a commercial invoice, packing list, and bill of lading or air waybill. Additionally, importers should be prepared to provide a Safety Data Sheet (SDS) for the chemical, which is crucial for hazard communication and regulatory compliance. If claiming preferential duty rates under a Free Trade Agreement, a valid Certificate of Origin or equivalent declaration is mandatory. Depending on the specific chemical, other agency requirements might apply, such as those from the Environmental Protection Agency (EPA) under the Toxic Substances Control Act (TSCA), which may require TSCA certification (positive or negative declaration) at the time of entry. Importers should verify all applicable agency requirements prior to importation.

While HS 2933.59 primarily covers a broad range of 'other' nitrogen heterocyclic compounds, importers must always screen their specific product against lists of dual-use items and controlled substances. Some chemicals, even if not explicitly listed, could be precursors or derivatives of controlled substances, or have potential applications in weapons of mass destruction, leading to export control restrictions in the country of origin or import restrictions in the destination country. For instance, certain piperazine derivatives have known pharmaceutical or illicit drug applications. Importers should consult relevant national chemical control lists (e.g., DEA schedules in the U.S., EU drug precursor regulations) and export control regulations (e.g., Export Administration Regulations (EAR) in the U.S.) to ensure compliance and avoid potential penalties. A thorough due diligence process is essential for all chemical imports.