U.S. imports of Cyclic Aldehydes Without Other Oxygen Functions (NESOI) (HS 291229) totaled $6.4M in August 2026, imported from 15 countries.
Importers of Cyclic Aldehydes Without Other Oxygen Functions (NESOI) paid $1.3M in duties in August 2026, an average duty rate of 16.90% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Cyclic Aldehydes Without Other Oxygen Functions (NESOI) imports of $6.4M in August 2026 ran 17% below the year-to-date monthly average of $7.7M.
Last updated: August 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.
228 import shipments a month
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 · $6.4M of $29.0M
ImportsExports
Imports
$6.4MYoY · free account
Exports
$2.1MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $94.4M of Cyclic Aldehydes Without Other Oxygen Functions (NESOI) and exported $22.5M.
Through August 2026. Source: U.S. Census Bureau.
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2912296010 | Cyclic Aldehydes Without Oxy Func Odor Flav Cmpds | $6.0M | 16.29% | 72.63% | $979K |
| 2912296090 | Cyclic Aldehydes Without Other Oxy Function, NESOI | $1.4M | 20.12% | 99.58% | $278K |
| 2912293000 | 3,4-Dimethylbenzaldehyde; Paraldehyde; Tolualdehyd | $105K | 12.50% | 100.00% | $13K |
| 2912291000 | Phenylacetaldehyde | $26K | 5.13% | 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 | $1.7M |
| 2912290090 | Cyclic Aldehydes Without Other Oxy Func NESOI | $392K |
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 · August 2026
origin
Mexico and China together supply 52% of it. China pays 41.2% duty; Mexico 1.7%.
customs district
destination
entry
rate provision · imports
16.6% enters free of duty; duty collected equals 16.90% of imports for consumption.