HTS Chapter 35 tariff rates (headings 3501–3507), 2026
Chapter 35 has 24 tariff lines across 7 headings. 7 (29%) enter duty-free at the general (MFN) rate, and 24 are on a Section 301 list, so products of China pay an extra duty on top.
24 tariff lines, USITC 2026HTSRev19. Specific or compound = a rate per unit (e.g. ¢/kg), not a percentage.
Section 301 China lists in chapter 35
| List | Duty for products of China | Lines |
|---|---|---|
| List 3 | Base rate + 25% | 10 |
| List 4A | Base rate + 7.5% | 14 |
Highest general duty rates in chapter 35
| HTS code | Description | General rate | Section 301 |
|---|---|---|---|
3506.10.10.00 | Animal glue, including casein glue, but not including fish glue | 6.5% | List 3 (+25%) |
3501.90.20.00 | Casein glues | 6% | List 4A (+7.5%) |
3504.00.10.00 | Protein isolates | 5% | List 4A (+7.5%) |
3504.00.50 | Other | 4% | List 4A (+7.5%) |
3506.10.50.00 | Other | 2.1% | List 3 (+25%) |
3506.91.50.00 | Other | 2.1% | List 3 (+25%) |
All headings in chapter 35
| Heading | Description | Lines | Duty-free | Top rate | On 301 |
|---|---|---|---|---|---|
3501 | Casein, caseinates and other casein derivatives; casein glues: | 4 | 1 | 6% | 4 |
3502 | Albumins (including concentrates of two or more whey proteins, containing by weight more than 80 percent whey proteins, calculated on the dry matter), albuminates and other albumin derivatives: | 4 | 2 | 0% | 4 |
3503 | Gelatin (including gelatin in rectangular (including square) sheets, whether or not surfaceworked or colored) and gelatin derivatives; isinglass; other glues of animal origin, excluding casein glues of heading 3501: | 4 | 0 | 4 | |
3504 | Peptones and their derivatives; other protein substances and their derivatives, not elsewhere specified or included; hide powder, whether or not chromed: | 2 | 0 | 5% | 2 |
3505 | Dextrins and other modified starches (for example, pregelatinized or esterified starches); glues based on starches, or on dextrins or other modified starches: | 2 | 0 | 2 | |
3506 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg: | 5 | 1 | 6.5% | 5 |
3507 | Enzymes; prepared enzymes not elsewhere specified or included: | 3 | 3 | 0% | 3 |
General rates apply to most countries; free-trade partners can qualify for the special rate, and Column 2 applies to a few countries. Other duties (Section 232, antidumping/countervailing, other Chapter 99 measures) can also apply. Always confirm a classification with CBP or a licensed customs broker.
How to check any single code in seconds: How to check any US tariff rate by HTS code. Chapter 34 · Chapter 36 · All chapters