Carboxyamide-function compounds — HTS 2924
Carboxyamide-function compounds; amide-function compounds of carbonic acid
Chapter 29 › Heading 2924
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 2924 is a broad product category in Chapter 29 for certain nitrogen-containing organic chemicals. It covers compounds with a carboxyamide function and amide-function compounds of carbonic acid. In plain language, these are chemical substances whose molecular structure contains particular amide groups; the heading is about chemical structure, not simply whether a product is marketed as an “amide.”
The four-digit heading is only the starting point. To reach the correct 8-digit HTSUS subheading, follow the further splits under heading 2924, which commonly distinguish the specific chemical, chemical type, or form described by the tariff text. Confirm the product’s identity and composition first, then compare it with the complete subheading descriptions and any applicable legal notes. The final classification can depend on technical facts and may require a customs broker or other qualified classification professional.
What to check
- Obtain the exact chemical name, CAS Registry Number, molecular formula, composition, and purity or concentration from the supplier’s specifications or safety data sheet.
- Read every level of the HTSUS structure under heading 2924, including the 6-digit international subheading and the additional U.S. 8-digit breakout; do not select a code from the heading title alone.
- Match the product to the tariff wording based on its chemical identity and function, not its brand name, trade name, intended use, or packaging.
- Check whether mixtures, solutions, salts, derivatives, preparations, or products containing more than one relevant substance are treated differently from the pure chemical.
- Review the General Rules of Interpretation, Chapter 29 notes, and any relevant official classification rulings; seek broker or specialist advice when the molecular structure or product description is unclear.
HTS heading 2924 summary
Carboxyamide-function compounds 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 |
|---|---|
| 2924.19 | Other |
| 2924.21 | Ureines and their derivatives; salts thereof |
| 2924.23 | 2-Acetamidobenzoic acid (N-acetylanthranilic acid) and its salts |
| 2924.29 | Other |
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 |
|---|---|---|---|---|
| 2924.11.00.00 👉 | Meprobamate (INN) | Free | — | 25% |
| 2924.12.00.00 👉 | Fluoroacetamide (ISO), monocrotophos (ISO) and phosphamidon (ISO) | 3.7% | Free | 25% |
| 2924.24.00.00 👉 | Ethinamate (INN) | Free | — | 30.5% |
| 2924.25.00.00 👉 | Alachlor (ISO) | 6.5% | Free | 15.4¢/kg + 58% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 2924?
Carboxyamide-function compounds; amide-function compounds of carbonic acid. 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.