Ammonia — HTS 2814
Ammonia, anhydrous or in aqueous solution
Chapter 28 › Heading 2814
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 2814 is a broad product category for ammonia, including anhydrous ammonia (ammonia without added water) and ammonia in aqueous solution (ammonia mixed with water). It groups these products by their chemical identity and physical form, rather than by how they are packaged or sold. The heading is part of Chapter 28, which covers inorganic chemicals.
To reach the correct 8-digit HTSUS code, start with the product’s composition and form, then read the subheadings and statistical breakouts under heading 2814. The narrower code may distinguish anhydrous material from aqueous solution and may use additional product descriptions or statistical categories. Confirm the wording against the current HTSUS, and have a customs broker or classification specialist review unusual formulations or mixtures.
What to check
- Confirm whether the product is anhydrous ammonia or an ammonia solution containing water.
- Review the product’s safety data sheet, specification sheet, formula, and concentration to verify its chemical composition.
- Read all subheading and statistical-note language under heading 2814; do not choose a code based only on the product’s trade name.
- Check whether additives, mixtures, or a special preparation could place the product outside this heading, and seek professional classification advice if unclear.
- Verify the complete 8-digit HTSUS code in the current official tariff and compare it with prior rulings or broker guidance when available.
HTS heading 2814 summary
Ammonia is a 4-digit product category containing 2 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.
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 |
|---|---|---|---|---|
| 2814.10.00.00 👉 | Anhydrous ammonia | Free | — | Free |
| 2814.20.00.00 👉 | Ammonia in aqueous solution | Free | — | Free |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 2814?
Ammonia, anhydrous or in aqueous solution. 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.