# HS code 3606.90: Ferro-cerium and other pyrophoric alloys in all forms; articles of combustible materials as specified in Note 2 to this Chapter

> HS code 3606.90 covers ferro-cerium and other pyrophoric alloys in all forms; articles of combustible materials as specified in Note 2 to this Chapter, other than those classified in 3606.10. It sits in heading 36.06 (ferro-cerium and other pyrophoric alloys in all forms; articles of combustible materials as specified in Note 2 to this Chapter) in chapter 36 (explosives; pyrotechnic products; matches; pyrophoric alloys; certain combustible preparations). Other goods of heading 36.06 are classified under 3606.10 (liquid or liquefied-gas fuels in containers of a kind used for filling or refilling cigarette or similar lighters or of a capacity not exceeding 300 cm3).

Source: https://staging.border.bot/hs-codes/360690
Last updated: 13 October 2026

[HS codes](https://staging.border.bot/hs-codes) / [Chapter 36](https://staging.border.bot/hs-codes/36) / [36.06](https://staging.border.bot/hs-codes/3606) / [3606.90](https://staging.border.bot/hs-codes/360690)

## Key facts

- HS code: 3606.90
- Covers: Ferro-cerium and other pyrophoric alloys in all forms; articles of combustible materials as specified in Note 2 to this Chapter
- Heading: [36.06: Ferro-cerium and other pyrophoric alloys in all forms; articles of combustible materials as specified in Note 2 to this Chapter](https://staging.border.bot/hs-codes/3606)
- Chapter: [36: Explosives; pyrotechnic products; matches; pyrophoric alloys; certain combustible preparations](https://staging.border.bot/hs-codes/36)
- Edition: HS2022
- Duty rates: [Set by each country’s tariff](https://staging.border.bot/countries)

## What this code covers

HS code 3606.90 covers ferro-cerium and other pyrophoric alloys in all forms; articles of combustible materials as specified in Note 2 to this Chapter, other than those classified in 3606.10.

The legal text of the subheading is “Other”, in HS2022.

## What it doesn’t cover

Other goods of heading 36.06 are classified under 3606.10 (liquid or liquefied-gas fuels in containers of a kind used for filling or refilling cigarette or similar lighters or of a capacity not exceeding 300 cm3).

- [3606.10](https://staging.border.bot/hs-codes/360610) 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

## How it is structured

3606.90 is a six-digit subheading. Its first two digits, 36, are the chapter; the first four, 3606, are heading 36.06; the last two, 90, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- Chapter 36: Explosives; pyrotechnic products; matches; pyrophoric alloys; certain combustible preparations
- Heading 36.06: Ferro-cerium and other pyrophoric alloys in all forms; articles of combustible materials as specified in Note 2 to this Chapter
- Subheading 3606.90: Other

## In other countries

No national tariff lines under 3606.90 are live on border.bot yet. Tariffs built on the Harmonized System (HS2022) use 3606.90 at six digits and add their own digits after it.

- Previous subheading: [3606.10](https://staging.border.bot/hs-codes/360610) 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
- Next subheading: [3701.10](https://staging.border.bot/hs-codes/370110) For X-ray

## Frequently asked questions

### What does HS code 3606.90 cover?

HS code 3606.90 covers ferro-cerium and other pyrophoric alloys in all forms; articles of combustible materials as specified in Note 2 to this Chapter, other than those classified in 3606.10.

### Which heading and chapter is HS code 3606.90 in?

HS code 3606.90 is in heading 36.06 (ferro-cerium and other pyrophoric alloys in all forms; articles of combustible materials as specified in Note 2 to this Chapter) in chapter 36 (explosives; pyrotechnic products; matches; pyrophoric alloys; certain combustible preparations).

### Where are goods of heading 36.06 classified when 3606.90 doesn’t fit?

Other goods of heading 36.06 are classified under 3606.10 (liquid or liquefied-gas fuels in containers of a kind used for filling or refilling cigarette or similar lighters or of a capacity not exceeding 300 cm3).

## Sources and updates

The Harmonized System legal text comes from border.bot release 1 (edition HS 2022), imported from a file, and has been live since 13 October 2026.

This page was last updated on 13 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Machine-readable: https://staging.border.bot/hs-codes/360690.json