PlainTariff

HTS Chapter 35 · Section VI

Albuminoidal substances; modified starches; glues; enzymes

Chapter 35 averages a 2.3% general (MFN) duty across its 24 rated tariff lines, with the steepest line reaching 6.5%.

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2.3%
avg MFN duty
6.5%
highest line
24
rated tariff lines
29%
enter duty-free

Tariff lines in Chapter 35 by duty-rate band

How the 24 rated lines in this chapter distribute across general (MFN) rate ranges

Duty-free70.1–5%155–10%2

Source: USITC HTS 2026 As of 2026

About HTS Chapter 35

HTS Chapter 35 - Albuminoidal substances; modified starches; glues; enzymes - organizes 49 tariff classifications in the US Harmonized Tariff Schedule. Of these, 24 carry explicit duty rates at the tariff-line level, meaning importers can look up a specific Column 1 General (MFN) rate for every qualifying shipment. Chapter 35 sits within Section VI (Products of the Chemical or Allied Industries), which groups commercially related product categories together.

The average general duty rate across all tariff lines in this chapter is 2.3%, with the highest individual rate reaching 6.5%. Duty burden varies widely across tariff lines within this chapter, classification precision matters. Below, each line links to its individual detail page showing General, Special (FTA), and Column 2 rates.

Use this chapter page as the entry point for classifying any product that falls under albuminoidal substances; modified starches; glues; enzymes. The tree below preserves the HTS indentation hierarchy (heading → subheading → tariff line), so you can narrow from broad category to specific 8-10 digit code. All data comes from the US International Trade Commission (USITC) HTS 2026 Basic Edition, the official schedule of import duties used by US Customs and Border Protection.

Chapter 35 At a Glance

Tariff distribution statistics for HTS Chapter 35 from USITC 2026 Basic Edition.
Metric Value Notes
Total tariff classifications 49 All headings, subheadings, and tariff lines.
Lines with explicit rates 24 Tariff lines carrying a Column 1 General duty.
Average general rate 2.3% Mean MFN rate across rated lines.
Highest line rate 6.5% Peak Column 1 General rate within the chapter.

Source: USITC Harmonized Tariff Schedule 2026 Basic Edition. Computed at last data refresh, see methodology.

Tariff Lines

3501 Casein, caseinates and other casein derivatives; casein glues:
3501.10 Casein:
3501.10.10.00 Milk protein concentrate
kg, kg msc
0.37¢/kg
3501.10.50.00 Other
kg, kg msc
Free
3501.90 Other:
3501.90.20.00 Casein glues
kg
6%
3501.90.60.00 Other
kg, kg msc
0.37¢/kg
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:
Egg albumin:
3502.11.00.00 Dried
kg
47.6¢/kg
3502.19.00.00 Other
kg
9.7¢/kg
3502.20.00.00 Milk albumin, including concentrates of two or more whey proteins
kg, kg msc
Free
3502.90.00.00 Other
kg
Free
3503.00 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:
3503.00.10.00 Fish glue
kg
1.2¢/kg + 1.5%
Inedible gelatin and animal glue:
3503.00.20.00 Valued under 88 cents per kg
kg
1.2¢/kg + 3.2%
3503.00.40.00 Valued 88 cents or more per kg
kg
2.8¢/kg + 3.8%
3503.00.55 Other
2.8¢/kg + 3.8%
3503.00.55.10 Edible gelatin
kg
3503.00.55.20 Photographic gelatin
kg
3503.00.55.50 Other
kg
3504.00 Peptones and their derivatives; other protein substances and their derivatives, not elsewhere specified or included; hide powder, whether or not chromed:
3504.00.10.00 Protein isolates
kg
5%
3504.00.50.00 Other
kg
4%
3505 Dextrins and other modified starches (for example, pregelatinized or esterified starches); glues based on starches, or on dextrins or other modified starches:
3505.10.00 Dextrins and other modified starches
0.7¢/kg
Dextrin:
3505.10.00.15 Derived from potato starch
kg
3505.10.00.20 Other
kg
Other:
3505.10.00.40 Derived from corn (maize) starch
kg
3505.10.00.45 Derived from potato starch
kg
3505.10.00.92 Other
kg
3505.20.00.00 Glues
kg
2.1¢/kg + 2.9%
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:
3506.10 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:
3506.10.10.00 Animal glue, including casein glue, but not including fish glue
kg
6.5%
3506.10.50.00 Other
kg
2.1%
Other:
3506.91 Adhesives based on polymers of headings 3901 to 3913 or on rubber:
3506.91.10.00 Optically clear free-film adhesives and optically clear curable liquid adhesives of a kind used solely or principally for the manufacture of flat panel displays or touch-sensitive screen panels
kg
Free
3506.91.50.00 Other
kg
2.1%
3506.99.00.00 Other
kg
2.1%
3507 Enzymes; prepared enzymes not elsewhere specified or included:
3507.10.00.00 Rennet and concentrates thereof
kg
Free
3507.90 Other:
3507.90.20.00 Pencillin G amidase
kg
Free
3507.90.70.00 Other
kg
Free

Frequently Asked Questions

What does HTS Chapter 35 cover? ▼
HTS Chapter 35 covers Albuminoidal substances; modified starches; glues; enzymes. It contains 49 individual tariff classifications, of which 24 have specified duty rates. This chapter falls under Section VI (Products of the Chemical or Allied Industries).
What is the average tariff rate for Chapter 35? ▼
The average general (MFN) duty rate across all tariff lines in Chapter 35 is 2.3%. The highest individual rate in this chapter is 6.5%. Actual duty on a specific product depends on its precise HTS classification.
How do I find the correct HTS code for my product? ▼
Browse the tariff lines listed below organized by heading and subheading. Each item with an HTS number links to its full detail page showing general, special, and Column 2 duty rates. For complex classifications, consult a licensed customs broker or contact US Customs and Border Protection (CBP).
Are there any duty-free items in Chapter 35? ▼
Yes, many chapters contain items with a "Free" general rate, meaning no duty is assessed for imports from most-favored-nation countries. Look for items marked "Free" in the tariff lines table below. Additional preferential rates may also apply under free trade agreements.
Where does PlainTariff get its tariff data? ▼
All tariff data comes from the U.S. International Trade Commission (USITC) Harmonized Tariff Schedule (HTS) 2026 Basic Edition, the official schedule of US import duties.

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Next steps

Find the exact rate for your product within Chapter 35.

The chapter average is an orientation only, duty is set per tariff line, and Special preferential rates may apply to qualifying origins.

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Sources: U.S. International Trade Commission Harmonized Tariff Schedule (2026 Basic Edition) and FAO FAOSTAT Trade: Crops and Livestock. See our methodology for how figures are computed.

Every figure on PlainTariff is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.