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HSChapter 29
U.S. exports of maleic anhydride (HS 291714) totaled $4.4M in July 2026.
Importers of Maleic Anhydride paid $187K in duties in July 2026 — an effective duty rate of 22% on $856K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataMaleic anhydride is a reactive intermediate widely used in unsaturated polyester resins, alkyd coatings, and agricultural chemical synthesis, and its US import classification turns on feedstock origin: 2917141000 covers material derived from benzene or aromatic hydrocarbons, while 2917145000 covers non-aromatic-derived product. Taiwan and South Korea are the leading suppliers to the US market, reflecting significant Asian production capacity built around benzene-based routes. Importers should be aware that product from China — the fourth-ranked supplier — may be subject to Section 301 tariffs, and antidumping measures have historically applied to maleic anhydride from certain origins.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
19 shipments/mo
The split between 2917141000 (benzene/aromatic-derived) and 2917145000 (non-aromatic-derived) reflects different production routes and historically different duty treatment. Most commercially traded maleic anhydride is benzene-derived, but importers must confirm the manufacturing process with the foreign supplier to ensure correct classification and avoid potential misclassification penalties.
Yes, the US has historically imposed antidumping duty orders on maleic anhydride from certain countries. Importers should check current US International Trade Commission and Commerce Department orders for active measures before contracting, as duty liability can be retroactive to the date of initiation in some proceedings.
Subheading 11 of 13 in heading 2917
Subheading 291714 · $982K of $120.5M
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ImportsExports
Imports
$982KYoY · Pro
Exports
$4.4MYoY · 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 |
|---|---|---|---|---|---|
| 2917145000 | Maleic Anhydride, Not Deriv From Benzene/Arom Etc | $1.2M | 25.77% | 100.00% | $300K |
| 2917141000 | Maleic Anhydride Deriv Fr Benzene/Arom Hydrocarbon | $0 | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2917140000 | Maleic Anhydride | $6.8M |
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 66% of it.
customs district
origin
entry
rate provision · imports
12.8% enters free of duty; the effective duty rate is 19.08%.