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SITCSection 5
U.S. imports of organo-sulfur compounds, not elsewhere specified (SITC 51549) totaled $68.6M in April 2026, traded with 29 countries.
Importers of Organo-Sulfur Compounds, Not Elsewhere Specified paid $7.6M in duties in April 2026 — an effective duty rate of 12% on $64.4M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataResidual organo-sulfur compounds not captured by more specific headings — such as thiocarbamates, thiurams, or methionine — include a wide array of specialty chemicals used as antioxidants, lubricant additives, pharmaceutical intermediates, and flavor compounds. Correct classification here requires demonstrating that the substance does not fit a more specific sulfur-compound heading, which often necessitates detailed structural documentation. The chemical diversity within this NES category means that duty rates, trade-remedy exposure, and end-use regulations can vary considerably from one compound to the next.
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CBP generally expects a complete structural formula or CAS number, a technical data sheet, and a written classification analysis explaining why the compound does not qualify under any more specific organo-sulfur heading. For novel or proprietary compounds, a binding ruling request provides the strongest advance certainty.
Yes. Depending on the country of origin and the specific HTS subheading, certain organo-sulfur compounds may be subject to Section 301 tariffs. Importers sourcing from affected countries should verify the current status of applicable trade actions with their customs broker before placing orders.
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Monthly import values over time