Harmonized Tariff Schedule of the United States · HTS code · HS 2934.10

2934.10.70

2934.10.70: Thiazole compounds: 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one; Ethyl 2-(2-aminothiazol-4-yl)-2- hydroxyiminoacetate; Ethyl 2-(2-aminothiazol-4-yl)-2- methoxyiminoacetate; 2-Methyl-4-isothiazolin- 3-one; 2-n-Octyl-4-isothiazolin-3-one; and Thiothiamine hydrochloride

Thiazole compounds

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. 2934 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds:
  2. 2934.10 Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure:
  3. Other:
  4. 2934.10.70 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one; Ethyl 2-(2-aminothiazol-4-yl)-2- hydroxyiminoacetate; Ethyl 2-(2-aminothiazol-4-yl)-2- methoxyiminoacetate; 2-Methyl-4-isothiazolin- 3-one; 2-n-Octyl-4-isothiazolin-3-one; and Thiothiamine hydrochloride

What you pay

Importing into USA

Customs duty Free standard rate depends on the country of origin
Additional duties and charges —
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.

No additional measures recorded for this origin.

Same subheading in other tariffs

2934.10 Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure

USA lines: 2934.10

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.

  • N293297 U.S. CBP 23 January 2018 · 2934.10.20.00

    The tariff classification of Thiabendazole (CAS No. 148-79-8) in bulk powder form, from Brazil

  • N283735 U.S. CBP 7 March 2017 · 2934.10.10.00

    The tariff classification of Mirabegron (CAS No. 223673-61-8) in bulk powder form, from Spain

  • N278066 U.S. CBP 31 August 2016 · 2934.10.10.00

    The tariff classification of Nitazoxanide (CAS number 55981-09-4) in bulk powder form, from Italy

Legal notes

Notes

Chapter notes: Chapter 29 →

HTS code 2934.10.70 is a line of the Harmonized Tariff Schedule of the United States under HS subheading 2934.10 (compounds containing an unfused thiazole ring).

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 6.5%, the Türkiye duty is 6.5%, the Canada duty is free, the Mexico duty is free, the Brazil duty is 0%–12.6%, the Argentina duty is 0%–12.6%, the Peru duty is free, the New Zealand duty is free, the Japan duty is 3.1%, the Taiwan duty is 3.5%, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is free and the Nigeria duty is 5%.

The United States imported goods of subheading 2934.10 worth US$486m in 2024; the largest supplier was China.

Questions and answers

What is the USA import duty for HTS code 2934.10.70?

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 2934.10 as a whole, the largest supplier in 2024 was China (US$133m), followed by Germany.

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