Harmonized Tariff Schedule of the United States · HTS code · HS 3824.99

3824.99.21

3824.99.21: Other chemical products and preparations: Consisting wholly of substances found naturally in coal tar, whether obtained from coal tar or other source

Other chemical products and preparations

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. 3824 Prepared binders for foundry molds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included:
  2. Other:
  3. 3824.99 Other:
  4. Other:
  5. Mixtures containing 5 percent or more by weight of one or more aromatic or modified aromatic substances:
  6. 3824.99.21 Consisting wholly of substances found naturally in coal tar, whether obtained from coal tar or other source

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

3824.99 Prepared binders for foundry moulds or cores: other, other

USA lines: 3824.99

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.

  • N365232 U.S. CBP 28 September 2026 · 3824.99.93.97

    The tariff classification of a soil supplement from India

  • N364756 U.S. CBP 16 September 2026 · 3824.99.93.97

    The tariff classification of three Organic Gypsum Prill products (soil amendments) from Canada

  • N364613 U.S. CBP 15 September 2026 · 3824.99.93.97

    The tariff classification of four disposable dehumidifiers from China

  • N364117 U.S. CBP 31 August 2026 · 3824.99.29.00

    The tariff classification of a Valentine’s Day cards with novelties kit from China.

  • 600016423 HMRC 6 October 2026 – 5 October 2029 · 3824 99 96 99

    A hermetically sealed plastic capsule containing desiccant silica crystals. This is for use with cochlear implants to remove moisture from the sound processor of the hearing aid. Once the blister packaging has been opened, the capsule is used until the crystals turn white in colour. They are…

  • 600016422 HMRC 5 October 2026 – 4 October 2029 · 3824 99 96 99

    Three bricks measuring 7.6 cm X 4.1cm X 1.6cm.These are made from Zeolite, Crystalline Quartz and additives. The bricks are used to absorb moisture and humidity from sound processors. These are packed into a clear moulded plastic container.

  • 600014433 HMRC 3 March 2026 – 2 March 2029 · 3824 99 96 99

    Slurry primer Materials: quartz 98%, and synthetic polymers 0.-1.5% Appearance: Sand-like particles. Slurry primer works by creating a strong, adhesive bond between a surface and the material being installed packaged in a tub

  • 600014301 HMRC 17 December 2025 – 16 December 2028 · 3824 99 93 90

    A powder blend used for coating seeds. Designed for use in the seed treatment process, where it is applied to agricultural and horticultural seeds during an agglomeration coating procedure. Ingredients include wood flour, mineral filler and a binder. When combined with water, powder coats seeds to…

241 rulings in total for this code

Legal notes

Notes
Subheading notes

Chapter notes: Chapter 38 →

Code history

Since 2017; before, these goods were classified under 3824.90.

HTS code 3824.99.21 is a line of the Harmonized Tariff Schedule of the United States under HS subheading 3824.99 (prepared binders for foundry moulds or cores: other, other).

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

For the same subheading, the UK duty is 0%–6.5%, the EU duty is 0%–6.5%, the Türkiye duty is 0%–30%, the Canada duty is free, the Mexico duty is 0%–6%, the Brazil duty is 0%–12.6%, the Argentina duty is 0%–12.6%, the Peru duty is 0%–6%, the New Zealand duty is 0%–5%, the Japan duty is 0%–3.9%, the Taiwan duty is 0%–5%, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is 0%–6% and the Nigeria duty is 5%–10%.

The United States imported goods of subheading 3824.99 worth US$4bn in 2024; the largest supplier was South Korea, and the United Kingdom ranked 8th with US$134m.

Questions and answers

What is the USA import duty for HTS code 3824.99.21?

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 3824.99 as a whole, the largest supplier in 2024 was South Korea (US$1bn), followed by Germany.

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Typical products

Everyday names, not part of the legal text.