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HSChapter 29
U.S. imports of acyclic polycarboxylic acids, anhydrides, and derivatives (nesoi) (HS 291719) totaled $9.2M in April 2026, traded with 19 countries.
Importers of Acyclic Polycarboxylic Acids, Anhydrides, and Derivatives (NESOI) paid $664K in duties in April 2026 — an effective duty rate of 10% on $6.5M in dutiable value, based on actual customs collections rather than the published tariff schedule. Acyclic Polycarboxylic Acids, Anhydrides, and Derivatives (NESOI) imports of $9.2M in April 2026 ran 20% above the year-to-date monthly average of $7.7M.
Last updated: April 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.
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.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $5.6M | $820K | -$4.8M |
| CANADA | $1.2M | $1.3M | +$69K |
| NETHERLANDS | -- | $1.5M | +$1.5M |
| SINGAPORE | -- | $833K | +$833K |
| AUSTRIA | $787K | -- | -$787K |
Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2917197050 | ACYCLIC POLYCARBOX ACID AND DERIV (EXC PLASTCZRS) | $5.2M | 4.92% | $184K |
| 2917191700 | FUMARIC ACID NOT DERIVED FROM AROMATIC HYDROCARBON | $1.6M | 27.34% | $94K |
| 2917193000 | ETHYLENE BRASSYLATE | $1.1M | 16.89% | $189K |
| 2917192700 | OTHER ACYCLIC POLYCARBOX ACIDS (EXC MALEIC)NESOI | $612K | 18.60% | $114K |
| 2917191000 | FERROUS FUMARATE | $285K | 6.50% | $18K |
| 2917197020 | ACYCLIC POLYCARBOXYLIC PLASTICIZERS AND THEIR DERI | $170K | 13.42% | $23K |
| 2917193500 | MALONIC ACID | $128K | 17.80% | $23K |
| 2917192000 | GLUTARIC ACID DERIVED FROM CYCLOPENTANONE ETC | $43K | 16.50% | $7K |
| 2917194000 | AROMATIC DERIV OF ACYCLIC POLYCARBOXYLIC ACIDS ETC | $26K | 16.50% | $4K |
| 2917192300 | MALEIC ACID NOT IN US NOTE 3 SECTION 6 | $16K | 41.50% | $7K |
| 2917191500 | FUMARIC ACID DERIV FROM AROMATIC HYDROCARBONS | $0 | -- | -- |
ACYCLIC POLYCARBOX ACID AND DERIV (EXC PLASTCZRS)
FUMARIC ACID NOT DERIVED FROM AROMATIC HYDROCARBON
ETHYLENE BRASSYLATE
OTHER ACYCLIC POLYCARBOX ACIDS (EXC MALEIC)NESOI
FERROUS FUMARATE
ACYCLIC POLYCARBOXYLIC PLASTICIZERS AND THEIR DERI
MALONIC ACID
GLUTARIC ACID DERIVED FROM CYCLOPENTANONE ETC
AROMATIC DERIV OF ACYCLIC POLYCARBOXYLIC ACIDS ETC
MALEIC ACID NOT IN US NOTE 3 SECTION 6
FUMARIC ACID DERIV FROM AROMATIC HYDROCARBONS
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2917197055 | ACYCLIC POLYCARBOXYLIC ACIDS & DERIV, NESOI | $6.6M |
| 2917194500 | ACYCLIC POLYCARBOX ACID&DERIV WHOLE/PT AROM HYDCBN | $784K |
| 2917192300 | MALEIC ACID NOT IN US NOTE 3 SECTION 6 | $188K |
| 2917191000 | FERROUS (IRON II) FUMARATE | $93K |
| 2917191600 | FUMARIC ACID (TRANS-BUTENEDIOIC ACID) | $61K |
| 2917197025 | ACYCLIC POLYCARBOXYLIC ACIDS PLASTICIZERS | $14K |
ACYCLIC POLYCARBOXYLIC ACIDS & DERIV, NESOI
1.6M kg
ACYCLIC POLYCARBOX ACID&DERIV WHOLE/PT AROM HYDCBN
222.1K kg
MALEIC ACID NOT IN US NOTE 3 SECTION 6
75.4K kg
FERROUS (IRON II) FUMARATE
38.5K kg
FUMARIC ACID (TRANS-BUTENEDIOIC ACID)
36.9K kg
ACYCLIC POLYCARBOXYLIC ACIDS PLASTICIZERS
2.3K kg
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
COMP WITH PYRIMIDINE OR PIPERAZINE RING, NESOI
HS 293359
ANTIBIOTICS, NESOI
HS 294190
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $253K | $3.3M | +$3.1M |
| New Jersey | $2.7M | $433K | -$2.2M |
| Pennsylvania | $516K | $790K | +$273K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEWARK, NJ | $3.2M | $88K | -$3.1M |
| HOUSTON, TX | $182K | $2.7M | +$2.5M |
| SAVANNAH, GA | $883K | $465K | -$417K |