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U.S. imports of carboxylic acids with aldehyde or ketone function (HS 291830) totaled $7.8M in July 2026, traded with 18 countries.
Importers of Carboxylic Acids with Aldehyde or Ketone Function paid $1.0M in duties in July 2026 — an effective duty rate of 15% on $6.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Carboxylic Acids with Aldehyde or Ketone Function imports of $7.8M in July 2026 ran 27% above the year-to-date monthly average of $6.2M.
Last updated: July 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.
119 shipments/mo
Subheading 5 of 17 in heading 2918
Subheading 291830 · $7.8M of $108.6M
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.
HSChapter 29
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ImportsExports
Imports
$7.8MYoY · 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 |
|---|---|---|---|---|---|
| 2918309000 | Non-Aromat Carboxy Acids With Aldehyde Etc Fnc Etc | $7.0M | 13.71% | 87.91% | $958K |
| 2918307000 | Dimethyl Acetyl Succinate; Oxalacetic Acid Etc...n | $692K | 7.28% | 72.81% | $50K |
| 2918302550 | Aromatic Carboxy Acids With Aldehyde or Ketone Etc | $103K | 0.00% | 100.00% | -- |
| 2918303000 | Other Arom Carboxy Acids With Aldehyde Etc Fnc Etc | $55K | 38.19% | 100.00% | $21K |
| 2918301000 | 1-Formylphenylacetic Acid,Methyl Ester | $0 | -- | -- | -- |
| 2918302500 | Aromatic Carboxy Acids With Aldehyde or Ketone Etc | $0 | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2918300090 | Carboxylic Acids With Aldehyde or Ketone Func Etc | $4.4M |
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 Spain together supply 52% of it.
customs district
destination
entry
rate provision · imports
8.9% enters free of duty; the effective duty rate is 13.13%.