U.S. imports of Ionones and Methylionones (HS 291423) totaled $3.1M in August 2026, imported from 11 countries.
Importers of Ionones and Methylionones paid $465K in duties in August 2026, an average duty rate of 15.31% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Ionones and Methylionones imports of $3.1M in August 2026 ran 31% above the year-to-date monthly average of $2.4M.
Last updated: August 2026 dataIonones and methylionones are violet-scented cyclic ketones central to the fragrance and flavor industry, used in perfumery, cosmetics, and food flavoring. Germany and Switzerland dominate US supply of this heading — reflecting the historic concentration of fine fragrance chemistry in those countries — with China also a significant source. Classified under a single US tariff line (2914230000), these compounds are sometimes referred to commercially as 'irones' or 'violet ketones,' and importers should ensure the trade name aligns with the correct chemical identity to avoid misclassification against related terpene-based aroma chemicals in other headings.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
156 import shipments a month
Ionones are classified as ketones under Chapter 29 rather than as terpenes under Chapter 38 or essential oils under Chapter 33. The key distinction is that ionones are chemically defined single compounds (or isomeric mixtures of defined compounds); blended or diluted fragrance preparations may shift classification to Chapter 33.
Pure ionones and methylionones are industrial/fragrance chemicals and do not trigger mandatory FSIS or APHIS admissibility review. However, if imported as part of a food-grade flavoring preparation, FDA oversight under food additive regulations may apply to the finished formulation.
Subheading 8 of 16 in heading 2914
Subheading 291423 · $3.1M of $87.1M
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ImportsExports
Imports
$3.1MYoY · free account
Exports
$114KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $27.5M of Ionones and Methylionones and exported $2.8M.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Germany and Switzerland together supply 70% of it. China pays 40.9% duty; Mexico 0.0%.
customs district
destination
entry
rate provision · imports
duty collected equals 15.31% of imports for consumption.
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 |
|---|---|---|---|---|---|
| 2914230000 | Iones and Methyliones | $3.0M | 15.31% | 98.48% | $465K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2914230000 | Iones and Methyliones | $114K |
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.