Hydrogen — HTS 2804
Hydrogen, rare gases and other nonmetals
Chapter 28 › Heading 2804
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 2804 is a broad four-digit product category for hydrogen, rare gases, and certain other nonmetals. It groups chemically defined elements and related forms that are generally traded as individual gases or nonmetal substances, rather than as finished products, mixtures, or equipment. The heading is only the starting point; it does not by itself identify the complete tariff treatment.
To reach the correct eight-digit HTSUS code, first identify the actual substance and its tariff-relevant form. The subheadings commonly distinguish products by material or type, such as hydrogen, a particular rare gas, or another named nonmetal. Confirm the product’s chemical identity, purity or grade when relevant, physical state, and whether it is a mixture, compound, preparation, or packaged article. Then compare those facts with the current HTSUS wording and applicable legal notes. A customs broker or classification specialist may be needed when the product description or composition is unclear.
What to check
- Obtain the exact chemical name, formula, CAS number, and composition from the supplier or safety data sheet.
- Check whether the shipment is a single chemically defined substance or a mixture, compound, preparation, or finished device.
- Review the heading’s subheadings and statistical suffixes to match the material and form—not merely its trade name.
- Confirm whether purity, concentration, physical state, packaging, or intended use affects classification under the current HTSUS.
- Verify the selected eight-digit code against current official HTSUS sources and seek broker advice if competing classifications remain possible.
HTS heading 2804 summary
Hydrogen is a 4-digit product category containing 7 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 |
|---|---|---|---|---|
| 2804.10.00.00 👉 | Hydrogen | 3.7% | Free | 25% |
| 2804.30.00.00 👉 | Nitrogen | 3.7% | Free | 25% |
| 2804.40.00.00 👉 | Oxygen | 3.7% | Free | 25% |
| 2804.50.00 👉 | Boron; tellurium | Free | — | 25% |
| 2804.70.00.00 👉 | Phosphorus | Free | — | 17.6¢/kg |
| 2804.80.00.00 👉 | Arsenic | Free | — | 13.2¢/kg |
| 2804.90.00.00 👉 | Selenium | 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 2804?
Hydrogen, rare gases and other nonmetals. 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.