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HSChapter 39
U.S. exports of propylene copolymers in primary forms (HS 390230) totaled $136.8M in July 2026.
Importers of Propylene Copolymers in Primary Forms paid $2.2M in duties in July 2026 — an effective duty rate of 14% on $15.9M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataPropylene copolymers in primary forms — random and impact copolymers produced by incorporating ethylene or other comonomers into a polypropylene backbone — offer improved clarity, flexibility, or impact resistance compared with homopolymer PP, making them preferred in food-contact packaging, medical devices, and automotive interior parts. The entire heading resolves to a single 10-digit line (3902300000), so the classification challenge is upstream: distinguishing these copolymers from polypropylene homopolymer (390210) and from ethylene-alpha-olefin copolymers (390140) based on the dominant monomer and comonomer ratio. South Korea leads US imports under this heading, followed by Singapore and Japan.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
475 shipments/mo
The classification turns on which monomer predominates by weight. If propylene is the dominant monomer and ethylene (or another alpha-olefin) is the minor comonomer, the material falls under heading 390230. If ethylene predominates, the material is more likely classified under heading 390140. Supplier certificates of composition specifying monomer weight percentages are essential supporting documentation.
While the resin itself enters as an industrial chemical, downstream converters using it for food-contact packaging must comply with FDA regulations governing indirect food additives (21 CFR). Importers supplying converters should request supplier declarations confirming that the resin formulation — including additives and stabilizers — is compliant with applicable FDA food-contact regulations for the intended use.
Subheading 2 of 4 in heading 3902
Subheading 390230 · $19.6M of $75.8M
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ImportsExports
Imports
$19.6MYoY · Pro
Exports
$136.8MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3902300000 | Propylene Copolymers | $16.5M | 9.66% | 67.21% | $1.6M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3902300000 | Propylene Copolymers | $137.6M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Exports · July 2026
destination
Mexico and Canada together take 74% of it.
customs district
origin
entry
rate provision · imports
18.6% enters free of duty; the effective duty rate is 11.12%.