Harmonized Tariff Schedule of the United States · HTS code · HS 3606.90
3606.90.40: Ferrocerium and other pyrophoric alloys in all forms: other, metaldehyde
Not declarable on its own: use one of its 1 subdivisions Data: Harmonized Tariff Schedule of the United States · checked on 24 October 2026
- 3606 Ferrocerium and other pyrophoric alloys in all forms; articles of combustible materials as specified in note 2 to this chapter:
- 3606.90 Other:
- 3606.90.40 Metaldehyde
What you pay
Importing into USA
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) 7.5%
- Applies to goods from
- China
- In force
- from 1 September 2019
- Legal act
- HTSUS 9903.88.15
Same subheading in other tariffs
3606.90 Ferro-cerium and other pyrophoric alloys in all forms: other
UK Free Third-country duty 2 tariff lines 
EU 6% – 6.5% Third-country duty 2 tariff lines · average 6.3% 
Türkiye 6% – 6.5% Third-country duty 4 tariff lines · average 6.3% 
Canada 6.5% Third-country duty 1 tariff line 
Mexico Free – 15% Third-country duty 3 tariff lines · average 8.3% 
Brazil 12.6% Third-country duty 1 tariff line 
Argentina 12.6% Third-country duty 2 tariff lines 
Peru Free – 6% Third-country duty 2 tariff lines · average 3% 
New Zealand Free – 5% Third-country duty 2 tariff lines · average 2.5% 
Japan 3.3% Third-country duty 1 tariff line 
Taiwan 6.5% Third-country duty 4 tariff lines 
GCC 5% Third-country duty 2 tariff lines 
Switzerland Free Third-country duty 1 tariff line 
Norway Free Third-country duty 2 tariff lines 
North Macedonia 6.5% Third-country duty 2 tariff lines 
Nigeria 20% Third-country duty 1 tariff line USA lines: 3606.90
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.
- N303044 U.S. CBP
The tariff classification of an outdoor survival kit from China.
- N271076 U.S. CBP
The tariff classification of a synthetic UF resin torch from Costa Rica.
- 600015003 HMRC
Firelighters. Natural firelighters made from pine, wood wool shavings. Wood wool firelighters are created by binding, shredding, and curling sustainably sourced wood fibres into small, shaped bundles, which are then dipped in paraffin wax and allowed to harden. This natural, eco-friendly process…
Legal notes
Notes
1. This chapter does not cover separate chemically defined compounds other than those described in note 2(a) or (b) below.
2. The expression ‘articles of combustible materials’ in heading 3606 applies only to:
(a) metaldehyde, hexamethylenetetramine and similar substances, put up in forms (for example, tablets, sticks or similar forms) for use as fuels; fuels with a basis of alcohol, and similar prepared fuels, in solid or semi-solid form;
(b) liquid or liquefied-gas fuels in containers of a kind used for filling or refilling cigarette or similar lighters and of a capacity not exceeding 300 cm3; and
(c) resin torches, firelighters and the like.
HTS code 3606.90.40 is a line of the Harmonized Tariff Schedule of the United States under HS subheading 3606.90 (ferro-cerium and other pyrophoric alloys in all forms: other).
The general duty is free, and quantities are declared in kg.
For the same subheading, the UK duty is free, the EU duty is 6%–6.5%, the Türkiye duty is 6%–6.5%, the Canada duty is 6.5%, the Mexico duty is 0%–15%, the Brazil duty is 12.6%, the Argentina duty is 12.6%, the Peru duty is 0%–6%, the New Zealand duty is 0%–5%, the Japan duty is 3.3%, the Taiwan duty is 6.5%, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is 6.5% and the Nigeria duty is 20%.
The United States imported goods of subheading 3606.90 worth US$17m in 2024; the largest supplier was China.
Questions and answers
What is the USA import duty for HTS code 3606.90.40?
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 3606.90 as a whole, the largest supplier in 2024 was China (US$6m), followed by Ireland.