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HSChapter 29
U.S. imports of cyclic aldehydes without other oxygen functions (nesoi) (HS 291229) totaled $4.9M in July 2026, traded with 15 countries.
Importers of Cyclic Aldehydes Without Other Oxygen Functions (NESOI) paid $906K in duties in July 2026 — an effective duty rate of 22% on $4.1M in dutiable value, based on actual customs collections rather than the published tariff schedule. Cyclic Aldehydes Without Other Oxygen Functions (NESOI) imports of $4.9M in July 2026 ran 38% below the year-to-date monthly average of $7.9M.
Last updated: July 2026 dataCovering aromatic and non-aromatic cyclic aldehydes that lack additional oxygen-bearing functional groups — including phenylacetaldehyde (2912291000), tolualdehyde and 3,4-dimethylbenzaldehyde (2912293000), and several odor/flavor compound lines — this heading is a workhorse for the fragrance and flavor industry. Japan and Mexico are the leading US suppliers, with China and India also prominent; the heading's six 10-digit lines split primarily between designated named compounds and basket categories for odor/flavor use versus general industrial use. Importers should pay close attention to which specific line applies, as the odor/flavor compound lines (2912290020 and 2912296010) carry distinct classification criteria from the general NESOI lines.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
141 shipments/mo
Lines 2912290020 and 2912296010 are reserved for cyclic aldehydes used specifically as odoriferous or flavoring compounds, while 2912290090 and 2912296090 cover all other cyclic aldehydes not elsewhere specified. Classification hinges on the commercial end-use and chemical identity; importers should document the intended application and consult a licensed customs broker to ensure the correct line is declared.
Phenylacetaldehyde (2912291000) is monitored as a List I chemical precursor under DEA regulations because it can be used in the illicit synthesis of certain controlled substances. Importers may need to comply with DEA import notification or registration requirements in addition to standard CBP entry procedures.
Subheading 3 of 10 in heading 2912
Subheading 291229 · $4.9M of $25.1M
Supplier Network
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ImportsExports
Imports
$4.9MYoY · Pro
Exports
$2.2MYoY · 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 |
|---|---|---|---|---|---|
| 2912296010 | Cyclic Aldehydes Without Oxy Func Odor Flav Cmpds | $3.0M | 19.56% | 75.49% | $596K |
| 2912296090 | Cyclic Aldehydes Without Other Oxy Function, NESOI | $1.5M | 16.06% | 99.85% | $234K |
| 2912293000 | 3,4-Dimethylbenzaldehyde; Paraldehyde; Tolualdehyd | $357K | 20.83% | 100.00% | $74K |
| 2912291000 | Phenylacetaldehyde | $10K | 14.11% | 100.00% | $1K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2912290020 | Cyclic Aldehydes Without Oxy Func Odor Flav Cmpds | $1.8M |
| 2912290090 | Cyclic Aldehydes Without Other Oxy Func NESOI | $363K |
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 Mexico together supply 48% of it.
customs district
destination
entry
rate provision · imports
11.1% enters free of duty; the effective duty rate is 18.59%.