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Subheading 3 of 13 in heading 2917
Subheading 291719 · $8.9M of $104.1M
U.S. imports of acyclic polycarboxylic acids, anhydrides, and derivatives (nesoi) (HS 291719) totaled $8.9M in July 2026, traded with 20 countries.
Importers of Acyclic Polycarboxylic Acids, Anhydrides, and Derivatives (NESOI) paid $645K in duties in July 2026 — an effective duty rate of 9.3% on $6.9M in dutiable value, based on actual customs collections rather than the published tariff schedule. Acyclic Polycarboxylic Acids, Anhydrides, and Derivatives (NESOI) imports of $8.9M in July 2026 ran 14% above the year-to-date monthly average of $7.8M.
Last updated: July 2026 dataFumaric acid, malonic acid, glutaric acid, ethylene brassylate, and a broad range of other acyclic polycarboxylic acids and their derivatives fall into this residual heading when they are not specifically enumerated elsewhere in Chapter 29. The US schedule is unusually granular here, with fifteen 10-digit lines distinguishing aromatic-derived variants, plasticizer subsets, and specific named compounds such as ferrous fumarate (2917191000) and malonic acid (2917193500). China is the leading supplier, followed by Canada and India, and imports from China across multiple lines in this heading are subject to Section 301 tariffs. Correct classification requires careful attention to whether the compound is aromatic-derived and whether it falls within a US schedule note.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
222 shipments/mo
The split hinges on production route: 2917191500 covers fumaric acid derived from aromatic hydrocarbons, 2917191700 covers fumaric acid not so derived, and 2917191600 is a separate line for fumaric acid (trans-butenedioic acid) as defined in the schedule. Importers should obtain a manufacturer's declaration confirming the feedstock and synthesis pathway, and consult a licensed customs broker to apply the relevant US schedule notes.
Ethylene brassylate is a macrocyclic musk fragrance ingredient used in fine fragrances and personal care products. Its dedicated 10-digit line reflects its commercial importance as a specialty chemical distinct from commodity acyclic acids, and its separate enumeration allows for targeted duty and trade-remedy treatment independent of the broader NESOI basket.
HSChapter 29
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ImportsExports
Imports
$8.9MYoY · Pro
Exports
$9.1MYoY · 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 |
|---|---|---|---|---|---|
| 2917197050 | Acyclic Polycarbox Acid and Deriv (Exc Plastczrs) | $5.7M | 4.28% | 87.16% | $242K |
| 2917191700 | Fumaric Acid not Derived From Aromatic Hydrocarbon | $1.2M | 4.82% | 29.16% | $56K |
| 2917193000 | Ethylene Brassylate | $1.1M | 12.47% | 69.17% | $136K |
| 2917192700 | Other Acyclic Polycarbox Acids (Exc Maleic)NESOI | $626K | 29.60% | 100.00% | $185K |
| 2917191000 | Ferrous Fumarate | $253K | 4.14% | 63.66% | $10K |
| 2917197020 | Acyclic Polycarboxylic Plasticizers and Their Deri | $42K | 4.00% | 100.00% | $2K |
| 2917191500 | Fumaric Acid Deriv From Aromatic Hydrocarbons | $40K | 20.95% | 54.38% | $8K |
| 2917192300 | Maleic Acid not in US Note 3 Section 6 | $26K | 16.50% | 100.00% | $4K |
| 2917193500 | Malonic Acid | $3K | 35.01% | 100.00% | $1K |
| 2917194000 | Aromatic Deriv of Acyclic Polycarboxylic Acids Etc | $0 | -- | -- | -- |
| 2917192000 | Glutaric Acid Derived From Cyclopentanone Etc | $0 | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
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.
Imports · July 2026
origin
China and Canada together supply 76% of it.
customs district
destination
entry
rate provision · imports
12.2% enters free of duty; the effective duty rate is 7.25%.