Harmonized Tariff Schedule of the United States · HTS code · HS 2811.29

2811.29.10

2811.29.10: Other inorganic oxygen compounds of nonmetals: other, arsenic trioxide

Not declarable on its own: use one of its 1 subdivisions Data: Harmonized Tariff Schedule of the United States · checked on 22 October 2026

  1. 2811 Other inorganic acids and other inorganic oxygen compounds of nonmetals:
  2. Other inorganic oxygen compounds of nonmetals:
  3. 2811.29 Other:
  4. 2811.29.10 Arsenic trioxide

What you pay

Importing into USA

Customs duty Free standard rate depends on the country of origin
Additional duties and charges 2 additional measures
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 2

  • 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
  • Additional dutyRussia rate increase (Pub. L. 117-110) — Russian Federation (rates in lieu of column 2) 35%
    Applies to goods from
    Russia
    In force
    from 28 June 2022
    Legal act
    HTSUS 9903.90.08

Footnotes

  • 9903.90.08 Articles the product of the Russian Federation, as provided for in U.S. note 30(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 30(b) to this subchapter

Same subheading in other tariffs

2811.29 Other inorganic oxygen compounds of non-metals: other

USA lines: 2811.29

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.

  • N358616 U.S. CBP 4 March 2026 · 2811.29.50.00

    The tariff classification of Propylene, Monochlorosilane, and Nitric Oxide from South Korea

  • N306472 U.S. CBP 24 October 2019 · 2811.29.50.00

    The tariff classification of Scandium Oxide, Silicon Dioxide, and Silicon Monoxide from China

  • N273909 U.S. CBP 7 April 2016 · 2811.29.50.00

    The tariff classification of Nitrous Oxide (CAS # 10024-97-2) from Mexico

  • N272050 U.S. CBP 12 February 2016 · 2811.29.50.00

    The tariff classification of “Dinitrogen Tetroxide (Nitrogen Dioxide) CAS #10102-44-0” from France

Legal notes

Notes

Chapter notes: Chapter 28 →

HTS code 2811.29.10 is a line of the Harmonized Tariff Schedule of the United States under HS subheading 2811.29 (other inorganic oxygen compounds of non-metals: other).

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

For the same subheading, the UK duty is 4%, the EU duty is 4.6%–5.5% and the Türkiye duty is 4.6%–5.5%.

The United States imported goods of subheading 2811.29 worth US$78.9m in 2024; the largest supplier was China.

Questions and answers

What is the USA import duty for HTS code 2811.29.10?

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 2811.29 as a whole, the largest supplier in 2024 was China (US$26.4m), followed by Austria.

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