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SITCSection 5
U.S. imports of hydantoin and its derivatives (SITC 51572) totaled $2.2M in April 2026, traded with 12 countries.
Importers of Hydantoin and Its Derivatives paid $609K in duties in April 2026 — an effective duty rate of 28% on $2.2M in dutiable value, based on actual customs collections rather than the published tariff schedule. Hydantoin and Its Derivatives imports of $2.2M in April 2026 ran 51% above the year-to-date monthly average of $1.5M.
Last updated: April 2026 dataHydantoin — a five-membered ring containing both nitrogen and oxygen — and its derivatives occupy a specialized niche as anticonvulsant drug precursors, metal-plating bath additives, and slow-release fertilizer coatings. Phenytoin, one of the most commercially significant hydantoin derivatives, is a long-established antiepileptic API whose supply chain spans multiple continents. Classification precision matters here because some hydantoin derivatives may alternatively classify under pharmaceutical headings if they are presented as dosage-form drugs rather than bulk chemical intermediates.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
If the hydantoin derivative is put up in measured doses or packaged for retail sale as a medicament, it typically classifies under pharmaceutical headings rather than as a chemical intermediate. Bulk, non-dosed hydantoin compounds generally remain in the chemical intermediates category. A licensed customs broker or regulatory specialist should review the presentation and intended use before import.
Beyond pharmaceuticals, hydantoin derivatives are used as brightening agents in electroplating baths (particularly for nickel plating), as stabilizers in certain polymer systems, and as controlled-release nitrogen sources in specialty fertilizers.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $2.1M | $18K | -$2.0M |
| MEXICO | -- | $260K | +$260K |
| JAPAN | -- | $184K | +$184K |
| BELGIUM | -- | $167K | +$167K |
| UNITED KINGDOM | -- | $125K | +$125K |
Monthly import values over time