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HSChapter 29
U.S. imports of carboxylic acids with aldehyde or ketone function (HS 291830) totaled $7.0M in April 2026, traded with 17 countries.
Importers of Carboxylic Acids with Aldehyde or Ketone Function paid $505K in duties in April 2026 — an effective duty rate of 7.3% on $6.9M in dutiable value, based on actual customs collections rather than the published tariff schedule. Carboxylic Acids with Aldehyde or Ketone Function imports of $7.0M in April 2026 ran 25% above the year-to-date monthly average of $5.6M.
Last updated: April 2026 dataOxo-carboxylic acids — compounds bearing both a carboxylic acid group and an aldehyde or ketone function — are used as pharmaceutical building blocks, flavor precursors, and synthetic intermediates. The US schedule distinguishes aromatic from non-aromatic members and further enumerates specific compounds such as 1-formylphenylacetic acid methyl ester (2918301000) and oxalacetic acid (2918307000). France and Switzerland lead US import supply, a pattern consistent with the concentration of fine-chemical and pharmaceutical-intermediate production in Western Europe.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Non-aromatic carboxylic acids with aldehyde or ketone functions that are not specifically enumerated fall under the residual line 2918309000. The aromatic versus non-aromatic distinction is determined by whether the compound contains a benzene or other aromatic ring as part of its principal structure. When the classification is ambiguous, a binding ruling request to CBP is the most reliable path to certainty.
Many organic chemical intermediates classified in Chapter 29, including goods under this heading, have been subject to Section 301 tariffs on imports from China. The specific lines affected and any exclusions granted can change over time. Importers sourcing from China should verify current Section 301 applicability with a licensed customs broker before finalizing procurement decisions.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| FRANCE | $1.8M | $1.1M | -$698K |
| SWITZERLAND | $1.9M | $730K | -$1.2M |
| SPAIN | $1.4M | $5K | -$1.4M |
| CHINA | $919K | $425K | -$494K |
| AUSTRIA | $56K | $755K | +$700K |
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 |
|---|---|---|---|---|
| 2918309000 | NON-AROMAT CARBOXY ACIDS WITH ALDEHYDE ETC FNC ETC | $6.8M | 6.88% | $461K |
| 2918303000 | OTHER AROM CARBOXY ACIDS WITH ALDEHYDE ETC FNC ETC | $120K | 32.40% | $39K |
| 2918307000 | DIMETHYL ACETYL SUCCINATE; OXALACETIC ACID ETC...N | $56K | 10.00% | $6K |
| 2918301000 | 1-FORMYLPHENYLACETIC ACID,METHYL ESTER | $0 | -- | -- |
| 2918302500 | AROMATIC CARBOXY ACIDS WITH ALDEHYDE OR KETONE ETC | $0 | -- | -- |
NON-AROMAT CARBOXY ACIDS WITH ALDEHYDE ETC FNC ETC
OTHER AROM CARBOXY ACIDS WITH ALDEHYDE ETC FNC ETC
DIMETHYL ACETYL SUCCINATE; OXALACETIC ACID ETC...N
1-FORMYLPHENYLACETIC ACID,METHYL ESTER
AROMATIC CARBOXY ACIDS WITH ALDEHYDE OR KETONE ETC
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2918300000 | CARBOXYLIC ACIDS WITH ALDEHYDE OR KETONE FUNC ETC | $3.8M |
CARBOXYLIC ACIDS WITH ALDEHYDE OR KETONE FUNC ETC
343.8K 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 |
|---|---|---|---|
| New Jersey | $2.4M | $2.5M | +$159K |
| Louisiana | $1.3M | $65K | -$1.2M |
| Illinois | $940K | -- | -$940K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEWARK, NJ | $2.6M | $48K | -$2.5M |
| NEW YORK, NY | $36K | $1.9M | +$1.8M |
| NEW ORLEANS, LA | $1.3M | $39K | -$1.2M |