Hypochlorites — HTS 2828
Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites
Chapter 28 › Heading 2828
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 2828 is a four-digit product category for certain oxidizing inorganic chemicals: hypochlorites, commercial calcium hypochlorite, chlorites, and hypobromites. These substances are commonly used for bleaching, disinfection, water treatment, or chemical processing, but the heading is based on the product’s chemical identity and form—not simply on its intended use.
To reach the correct 8-digit HTSUS code, start with the product’s composition and identify which chemical family it belongs to. The more specific subheading may distinguish the material or type, such as a particular hypochlorite or chlorite, commercial calcium hypochlorite, or hypobromite. Confirm the product’s chemical name, concentration or mixture status, physical form, and any applicable “other” provision in the current HTSUS, then verify that the full description matches the imported merchandise.
What to check
- Obtain the safety data sheet, technical specification, and ingredient or assay information before classifying the product.
- Determine the chemical identity first; do not classify solely from labels such as “pool chemical,” “bleach,” or “disinfectant.”
- Check whether the merchandise is a named chemical, commercial calcium hypochlorite, a mixture, or another product that may fall outside heading 2828.
- Read all 8-digit subheading descriptions and related chapter or section notes, including any provisions for “other” products.
- Confirm the classification with a customs broker or seek a binding ruling when composition, mixtures, or product form makes the choice uncertain.
HTS heading 2828 summary
Hypochlorites 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 |
|---|---|---|---|---|
| 2828.10.00.00 👉 | Commercial calcium hypochlorite and other calcium hypochlorites | 2.4% | Free | 25% |
| 2828.90.00.00 👉 | Other | 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 2828?
Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites. 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.