U.S. imports of Hydantoin and Its Derivatives (SITC 51572) totaled $994K in August 2026, imported from 15 countries.
Importers of Hydantoin and Its Derivatives paid $83K in duties in August 2026, an average duty rate of 8.39% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Hydantoin and Its Derivatives imports of $994K in August 2026 ran 13% below the year-to-date monthly average of $1.1M.
Last updated: August 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.
13 import shipments a month
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.
Basic heading 397 of 465 in section 5
Basic heading 51572 · $994K of $27.5B
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Imports · August 2026
origin
Taiwan and China together supply 91% of it. Israel pays 15.1% duty; India 2.6%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$994KYoY · free account
Exports
$484KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $12.6M of Hydantoin and Its Derivatives and exported $8.0M.
Through August 2026. Source: U.S. Census Bureau.