Heterocyclic compounds with oxygen hetero-atom — HTS 2932
Heterocyclic compounds with oxygen hetero-atom(s) only
Chapter 29 › Heading 2932
2026 HTS Rev 19 Synced Rules verified Operational
Written to help non-specialists understand this page. Rates, dates, and legal facts come from the official records above and on the linked source.
HTS heading 2932 is a four-digit product category for certain organic chemical compounds whose ring structure contains one or more oxygen atoms as the only hetero-atoms. A heterocyclic compound has atoms joined in a ring, and a hetero-atom is a ring atom that is not carbon or hydrogen. The heading can cover several different chemical families and forms, so the four-digit heading alone is not the complete tariff classification.
To reach the correct eight-digit HTSUS subheading, first identify the compound’s chemical identity and structure, then match it to the more specific description under heading 2932. The lower-level provisions commonly distinguish products by chemical family, molecular structure, substitution or functional groups, and sometimes whether the product is a defined compound or a preparation. Use the product’s CAS number, chemical name, formula, safety data sheet, specifications, and manufacturing information to verify the match. A customs broker or classification specialist may be needed for complex compounds or competing provisions.
What to check
- Confirm the product’s exact chemical identity, CAS number, molecular formula, and structural diagram before searching the tariff.
- Check whether the compound’s ring contains oxygen as the only hetero-atom; do not assume an oxygen-containing product belongs in heading 2932.
- Read every nested subheading and legal note to determine the correct chemical family and eight-digit code.
- Verify whether the merchandise is a single chemically defined compound, a mixture, or a formulated preparation, and classify its actual imported condition.
- Compare the tariff wording with official classification tools and prior rulings, and obtain broker or specialist advice when the structure or intended classification is uncertain.
HTS heading 2932 summary
Heterocyclic compounds with oxygen hetero-atom is a 4-digit product category containing 4 published product-code lines in this snapshot. A heading does not carry one universal duty rate; classification must be narrowed to the line matching the product facts.
How to find your code in this category
A heading is a product category. To get the exact duty, narrow from this 4-digit heading to a sub-category (usually by material), then open the 8-digit code that matches your product.
Open any code in the tables below to see its exact duty rate, a duty calculator (enter your shipment value → estimated duty and landed cost), the rate-change history chart, and the country-by-country breakdown (including Section 301/232 add-on duties).
Why you have to click in: a single category can contain products with very different duties. The rate depends on the specific product — its material and construction — and on the country of origin, and those only get pinned down at the 8-digit code level. That is why this page points you to codes instead of showing one rate for the whole category.
Sub-categories
| Code | Description |
|---|---|
| 2932.19 | Other |
| 2932.20 | Lactones |
Product codes & duty rates
👇 Each row is a specific product code — click a blue code to open its full page with exact duty rates by country, the rate-history chart, and a duty calculator. 👉
| Code | Description | General (MFN) | Special | Column 2 |
|---|---|---|---|---|
| 2932.11.00.00 👉 | Tetrahydrofuran | 3.7% | Free | 25% |
| 2932.12.00.00 👉 | 2-Furaldehyde (Furfuraldehyde) | Free | — | Free |
| 2932.13.00.00 👉 | Furfuryl alcohol and tetrahydrofurfuryl alcohol | 3.7% | Free | 25% |
| 2932.14.00.00 👉 | Sucralose | 3.7% | Free | 25% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 2932?
Heterocyclic compounds with oxygen hetero-atom(s) only. To classify a specific item you must pick the matching sub-category and 8-digit code above; the right choice usually depends on the material and construction of the product.
How do I choose the right code within this category?
Start from the sub-categories (typically divided by material—for example cotton versus man-made fibers), then open the active 8- or 10-digit code that matches the product. When unsure, a licensed customs broker or a CBP binding ruling can confirm the classification.
Reference information only, not customs, legal, or classification advice. Confirm the current code and rate against the official HTS before you import.