Harmonized Tariff Schedule of the United States · HTS code · HS 2921.59

2921.59.17

2921.59.17: 4,4'-Benzidine-2,2'-disulfonic acid; 1,4-Diaminobenzene-2-sulfonic acid; 4,4'-Methylene bis ((3-chloro-2,6-diethylaniline); 4,4'-Methylene bis(2,6-diethylaniline); 4,4'-Methylene bis (2,6-diisopropylaniline);m-Xylene diamine; and 3,3'-Diaminobenzidine (tetraaminobiphenyl)

Not declarable on its own: use one of its 1 subdivisions Data: Harmonized Tariff Schedule of the United States · checked on 24 October 2026

  1. 2921 Amine-function compounds
  2. Aromatic polyamines and their derivatives; salts thereof:
  3. 2921.59 Other:
  4. 2921.59.17 4,4'-Benzidine-2,2'-disulfonic acid; 1,4-Diaminobenzene-2-sulfonic acid; 4,4'-Methylene bis ((3-chloro-2,6-diethylaniline); 4,4'-Methylene bis(2,6-diethylaniline); 4,4'-Methylene bis (2,6-diisopropylaniline);m-Xylene diamine; and 3,3'-Diaminobenzidine (tetraaminobiphenyl)

What you pay

Importing into USA

Customs duty Free standard rate depends on the country of origin
Additional duties and charges 1 additional measure
VAT no federal VAT; a Merchandise Processing Fee of 0.3464 % is charged on formal entries
Duty calculatorCalculate duty and taxes →

US additional duties of HTS chapter 99 in force on 22 October 2026 are included (Section 301, 232, 338 and 201). IEEPA duties are no longer collected after the Supreme Court ruling of February 2026. Conditional exemptions (US content, end use, metal share) are not computed: check the provision.

Additional duties and import rules

Charges on top of the customs duty, and rules the goods must meet at the border.

Additional duties and charges 1

  • Additional dutySection 301 — China — technology transfer, IP and innovation (2018 actions and 2024 four-year review) 25%
    Applies to goods from
    China
    In force
    from 24 September 2018
    Legal act
    HTSUS 9903.88.03

Same subheading in other tariffs

2921.59 Aromatic polyamines and their derivatives; salts thereof: other

UK Free – 6% Third-country duty 8 tariff lines · average 3.8% EU Free – 6.5% Third-country duty 2 tariff lines · average 3.3% Türkiye Free – 6.5% Third-country duty 4 tariff lines · average 4.9% Canada Free Third-country duty 1 tariff line Mexico Free Third-country duty 1 tariff line Brazil Free – 10.8% Third-country duty 8 tariff lines · average 1.4% Argentina Free – 10.8% Third-country duty 10 tariff lines · average 1.1% Peru Free Third-country duty 1 tariff line New Zealand Free Third-country duty 1 tariff line Japan 3.1% Third-country duty 1 tariff line Taiwan 2.5% – 5% Third-country duty 15 tariff lines · average 4.5% GCC 5% Third-country duty 5 tariff lines Switzerland Free Third-country duty 1 tariff line Norway Free Third-country duty 1 tariff line North Macedonia 5% Third-country duty 2 tariff lines Nigeria 5% Third-country duty 1 tariff line

USA lines: 2921.59

Binding rulings for similar goods

Decisions of U.S. Customs and Border Protection (CROSS) and HMRC (Advance Tariff Rulings) on goods classified here. A ruling binds only its holder, but shows how the authorities classify similar goods. The descriptions are the authorities’ own, in English.

  • N300798 U.S. CBP 17 October 2018 · 2921.59.40.00

    The tariff classification of Various Chemical Compounds from China and/or Canada

  • 600009378 HMRC 15 December 2023 – 14 December 2026 · 2921 59 90 90

    S-Triaminotrinitrebenzene Form: powdered crystals Packaging: 1500kg jumbo bags

Legal notes

Chapter notes: Chapter 29 →

HTS code 2921.59.17 is a line of the Harmonized Tariff Schedule of the United States under HS subheading 2921.59 (aromatic polyamines and their derivatives; salts thereof: other).

The general duty is free, and quantities are declared in kg.

For the same subheading, the UK duty is 0%–6%, the EU duty is 0%–6.5%, the Türkiye duty is 0%–6.5%, the Canada duty is free, the Mexico duty is free, the Brazil duty is 0%–10.8%, the Argentina duty is 0%–10.8%, the Peru duty is free, the New Zealand duty is free, the Japan duty is 3.1%, the Taiwan duty is 2.5%–5%, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is 5% and the Nigeria duty is 5%.

The United States imported goods of subheading 2921.59 worth US$93m in 2024; the largest supplier was India.

Questions and answers

What is the USA import duty for HTS code 2921.59.17?

The general duty in the Harmonized Tariff Schedule of the United States is free; the supplementary unit is kg. Preferential rates for goods from agreement countries, anti-dumping duties and VAT are not included.

Where does the United States import these goods from?

For subheading 2921.59 as a whole, the largest supplier in 2024 was India (US$28m), followed by Japan.

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