What does HTS Chapter 35 cover?

Chapter 35 of the U.S. Harmonized Tariff Schedule (HTSUS) covers Albuminoidal substances; modified starches; glues; enzymes. It sits within Section VI: Products of the Chemical or Allied Industries. Tandom's catalog lists all 32 10-digit statistical lines and 5 4-digit headings in this chapter.

What is the typical U.S. duty rate for Chapter 35 imports?

General (Column 1) duty rates for ad-valorem lines range from 2.1% to 6.5% (median 4%); roughly 44% of lines enter duty-free. Use the calculator linked from each code page to compute the full landed rate, including Section 301/232 overlays, IEEPA tariffs, and AD/CVD deposits where applicable.

Are Section 301 or Section 232 tariffs applied to Chapter 35 products?

Section 301 (China) and Section 232 (steel, aluminum, copper) tariffs are layered on top of the base HTSUS rate via Chapter 99 provisions. Whether they apply to a specific 10-digit line in Chapter 35 depends on the product's country of origin, material content, and the active proclamation. Open any code in this chapter to see the live overlay stack and effective rate.

Are there antidumping or countervailing duty (AD/CVD) orders covering Chapter 35 products?

AD/CVD orders are issued at the case level by the Department of Commerce against specific products from specific countries. Tandom's AD/CVD catalog cross-references every active order to the HTS codes it covers — open any code in Chapter 35 to see flagged orders, deposit rates, and the underlying scope determinations.

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Section VI: Products of the Chemical or Allied Industries

Chapter 35: Albuminoidal substances; modified starches; glues; enzymes

Chapter 35 of the U.S. Harmonized Tariff Schedule covers Albuminoidal substances; modified starches; glues; enzymes and sits within Section VI: Products of the Chemical or Allied Industries.

About Chapter 35

Chapter 35 contains 32 10-digit statistical lines grouped under 5 4-digit headings. Brokers, importers, and customs counsel use these codes to declare albuminoidal substances; modified starches; glues; enzymes on entry summaries (CBP Form 7501) and to look up the applicable Column 1, Special, and Column 2 duty rates.

General (Column 1) duty rates for ad-valorem lines in Chapter 35 range from 2.1% to 6.5%, with a median of 4%. About 22% of the chapter's lines (7 of 32) enter duty-free under the general rate. Special-program rates (USMCA, KORUS, GSP, AGOA, and others) and Chapter 99 overlays modify these base rates for qualifying shipments.

Every code page links into the Tandom Tariff Calculator with the HTS code prefilled, so you can compute the full landed duty for a specific shipment by entering value, country of origin, and (where relevant) material content or date of entry. Tandom's data refreshes daily from USITC HTSUS, CBP CSMS, the Federal Register, and the Department of Commerce — the same authoritative sources the trade community files against.

Code	Description	General	Column 2	Special	Units
3501.10	Casein:	—	—	—	—
3501.10.10.00	·Milk protein concentrate	0.37¢/kg	12¢/kg	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	kg, kg msc
3501.10.50.00	·Other	Free	Free	—	kg, kg msc
3501.90	Other:	—	—	—	—
3501.90.20.00	·Casein glues	6%	30%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	kg
3501.90.60.00	·Other	0.37¢/kg	12.1¢/kg	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	kg, kg msc

Code	Description	General	Column 2	Special	Units
3502.11.00.00	·Dried	47.6¢/kg	59.5¢/kg	Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P, PA,PE,S,SG)	kg
3502.19.00.00	·Other	9.7¢/kg

Code	Description	General	Column 2	Special	Units
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	1.2¢/kg + 1.5%

Code	Description	General	Column 2	Special	Units
3505.10.00	Dextrins and other modified starches	0.7¢/kg	6.6¢/kg	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	—
3505.10.00.15	··Derived from potato starch

Code	Description	General	Column 2	Special	Units
3507.10.00.00	Rennet and concentrates thereof	Free	Free	—	kg
3507.90	Other:	—	—

Chapter 35: Albuminoidal substances; modified starches; glues; enzymes

`3501`Casein, caseinates and other casein derivatives; casein glues:

`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:

`3503`

`3504`

`3505`Dextrins and other modified starches (for example, pregelatinized or esterified starches); glues based on starches, or on dextrins or other modified starches:

`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:

`3507`Enzymes; prepared enzymes not elsewhere specified or included:

Frequently asked questions

What does HTS Chapter 35 cover?

What is the typical U.S. duty rate for Chapter 35 imports?

Are Section 301 or Section 232 tariffs applied to Chapter 35 products?

Are there antidumping or countervailing duty (AD/CVD) orders covering Chapter 35 products?

Code	Description	General	Column 2	Special	Units
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	5%	20%

Code	Description	General	Column 2	Special	Units
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

3501Casein, caseinates and other casein derivatives; casein glues:

3502Albumins (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:

3503

3504

3505Dextrins and other modified starches (for example, pregelatinized or esterified starches); glues based on starches, or on dextrins or other modified starches:

3506Prepared 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:

3507Enzymes; prepared enzymes not elsewhere specified or included:

Frequently asked questions

What does HTS Chapter 35 cover?

What is the typical U.S. duty rate for Chapter 35 imports?

Are Section 301 or Section 232 tariffs applied to Chapter 35 products?

Are there antidumping or countervailing duty (AD/CVD) orders covering Chapter 35 products?

`3501`Casein, caseinates and other casein derivatives; casein glues:

`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:

`3503`

`3504`

`3505`Dextrins and other modified starches (for example, pregelatinized or esterified starches); glues based on starches, or on dextrins or other modified starches:

`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:

`3507`Enzymes; prepared enzymes not elsewhere specified or included: