Acrylic polymers in primary forms — HTS 3906
Acrylic polymers in primary forms
Chapter 39 › Heading 3906
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 3906 is a four-digit product category for acrylic polymers in “primary forms.” It generally covers acrylic-based polymers supplied as materials such as powders, granules, flakes, lumps, pastes, or liquids, rather than finished articles made from those polymers. “Primary forms” is a classification term, so the product’s physical presentation and stage of processing matter.
To reach the correct eight-digit HTSUS code, start with heading 3906 and follow the more detailed subheadings. The distinctions commonly depend on the polymer’s identity or type—for example, the principal monomer or chemical composition, whether it is a specified polymer or copolymer, and sometimes its form or other technical characteristics. The product’s commercial name alone is not enough; the current HTSUS wording and relevant legal notes control.
What to check
- Obtain the technical data sheet, safety data sheet, and specification sheet; identify the polymer name, monomers, and whether it is a homopolymer, copolymer, blend, or preparation.
- Confirm that the merchandise is in a primary form and is not instead a finished plastic article, paint, adhesive, or other formulated product classified elsewhere.
- Compare the product’s chemical composition and physical form with every applicable 8-digit subheading under heading 3906, including any chapter or section notes.
- Check the current HTSUS, including tariff provisions, statistical suffixes, and relevant Customs rulings or binding classification guidance; do not rely only on a supplier’s code.
- Ask a qualified customs broker or request a binding ruling when the composition, polymer structure, or formulation is unclear.
HTS heading 3906 summary
Acrylic polymers in primary forms is a 4-digit product category containing 1 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 |
|---|---|
| 3906.90 | 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 |
|---|---|---|---|---|
| 3906.10.00.00 👉 | Poly(methyl methacrylate) | 6.3% | Free | 37% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 3906?
Acrylic polymers in primary forms. 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.