# United States tariff lines under HS 2821.10

> The United States tariff splits HS 2821.10 (iron oxides and hydroxides) into 5 national lines: 2821.10.00.10 (black), 2821.10.00.20 (red), 2821.10.00.30 (yellow), 2821.10.00.40 (other) and 1 other. The general (MFN) duty is 3.7% on all 5 lines.

Source: https://border.bot/countries/united-states/hs-codes/282110
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 28](https://border.bot/countries/united-states/hs-codes/28) / [2821.10](https://border.bot/countries/united-states/hs-codes/282110)

## Key facts

- HS subheading: [2821.10](https://border.bot/hs-codes/282110)
- Duty (MFN): 3.7%
- National lines: 5
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes

## United States lines under 2821.10

The United States tariff splits HS 2821.10 (iron oxides and hydroxides) into 5 national lines: 2821.10.00.10 (black), 2821.10.00.20 (red), 2821.10.00.30 (yellow), 2821.10.00.40 (other) and 1 other.

The general (MFN) duty is 3.7% on all 5 lines.

- [2821.10.00.10](https://border.bot/countries/united-states/hs-codes/2821100010) Iron oxides and hydroxides, Synthetic pigments, Black. Duty (MFN): 3.7%
- [2821.10.00.20](https://border.bot/countries/united-states/hs-codes/2821100020) Iron oxides and hydroxides, Synthetic pigments, Red. Duty (MFN): 3.7%
- [2821.10.00.30](https://border.bot/countries/united-states/hs-codes/2821100030) Iron oxides and hydroxides, Synthetic pigments, Yellow. Duty (MFN): 3.7%
- [2821.10.00.40](https://border.bot/countries/united-states/hs-codes/2821100040) Iron oxides and hydroxides, Synthetic pigments, Other. Duty (MFN): 3.7%
- [2821.10.00.50](https://border.bot/countries/united-states/hs-codes/2821100050) Iron oxides and hydroxides, Other. Duty (MFN): 3.7%

## In other countries

No other national tariff on border.bot has live lines under 2821.10 yet.

- [The Harmonized System text for 2821.10](https://border.bot/hs-codes/282110)

- Previous subheading: [2820.90](https://border.bot/countries/united-states/hs-codes/282090) Manganese oxides
- Next subheading: [2821.20](https://border.bot/countries/united-states/hs-codes/282120) Iron oxides and hydroxides; earth colors containing 70 percent or more by weight of combined iron evaluated as Fe2O3

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2821.10?

The United States tariff splits HS 2821.10 (iron oxides and hydroxides) into 5 national lines: 2821.10.00.10 (black), 2821.10.00.20 (red), 2821.10.00.30 (yellow), 2821.10.00.40 (other) and 1 other.

### What is the duty on HS 2821.10 in the United States?

The general (MFN) duty is 3.7% on all 5 lines.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 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.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/282110.json