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SITCSection 5
U.S. exports of polyurethanes in primary forms (SITC 57545) totaled $74.7M in July 2026.
Importers of Polyurethanes in Primary Forms paid $3.2M in duties in July 2026 — an effective duty rate of 14% on $23.9M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataPolyurethanes in primary forms — including MDI- and TDI-based prepolymers, polyols, and liquid systems — serve as the upstream building blocks for flexible foam, rigid insulation, coatings, adhesives, sealants, and elastomers across construction, automotive, and furniture sectors. The heading covers both one-component and two-component systems before they are reacted into final foam or elastomer, so the physical state at import (liquid, paste, granule) and the isocyanate content are critical parameters for both classification and hazardous-materials compliance. Section 301 tariff exposure varies by country of origin and specific product form, making origin documentation essential.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
1.5K shipments/mo
Basic heading 94 of 465 in section 5
Basic heading 57545 · $40.4M of $28.9B
Yes. Prepolymers retaining free isocyanate groups are classified as hazardous materials under DOT regulations and require proper UN packaging, SDS documentation, and hazmat labeling. Importers should confirm the free-NCO percentage with the supplier and ensure freight forwarders are briefed on the hazmat classification before shipment.
A pure polyol without isocyanate is classified separately from a polyurethane prepolymer or reaction system. If the imported product is a pre-blended two-component system, it may be classified as a polyurethane in primary forms rather than as a separate polyol or isocyanate. The key criterion is whether a urethane linkage has already been formed in the product as imported.
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Exports · July 2026
destination
Mexico and Canada together take 51% of it.
customs district
Census does not publish district detail for this classification system.
origin
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$40.4MYoY · Pro
Exports
$74.7MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.