# United States tariff lines under HS 2836.99

> The United States tariff splits HS 2836.99 (other: Other) into 6 national lines: 2836.99.10.00 (cobalt carbonates), 2836.99.20.00 (bismuth carbonate), 2836.99.30.00 (commercial ammonium carbonate and other ammonium carbonates), 2836.99.40.00 (lead carbonates) and 2 others. The general (MFN) duty differs by line: 4.2% on 2836.99.10.00, 5.5% on 2836.99.20.00, 1.7% on 2836.99.30.00, 0.5% on 2836.99.40.00, 3.7% on 2836.99.50.10 and 3.7% on 2836.99.50.50.

Source: https://border.bot/countries/united-states/hs-codes/283699
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) / [2836.99](https://border.bot/countries/united-states/hs-codes/283699)

## Key facts

- HS subheading: [2836.99](https://border.bot/hs-codes/283699)
- National lines: 6
- 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 2836.99

The United States tariff splits HS 2836.99 (other: Other) into 6 national lines: 2836.99.10.00 (cobalt carbonates), 2836.99.20.00 (bismuth carbonate), 2836.99.30.00 (commercial ammonium carbonate and other ammonium carbonates), 2836.99.40.00 (lead carbonates) and 2 others.

The general (MFN) duty differs by line: 4.2% on 2836.99.10.00, 5.5% on 2836.99.20.00, 1.7% on 2836.99.30.00, 0.5% on 2836.99.40.00, 3.7% on 2836.99.50.10 and 3.7% on 2836.99.50.50.

- [2836.99.10.00](https://border.bot/countries/united-states/hs-codes/2836991000) Other, Other, Cobalt carbonates. Duty (MFN): 4.2%
- [2836.99.20.00](https://border.bot/countries/united-states/hs-codes/2836992000) Other, Other, Bismuth carbonate. Duty (MFN): 5.5%
- [2836.99.30.00](https://border.bot/countries/united-states/hs-codes/2836993000) Other, Other, Commercial ammonium carbonate and other ammonium carbonates. Duty (MFN): 1.7%
- [2836.99.40.00](https://border.bot/countries/united-states/hs-codes/2836994000) Other, Other, Lead carbonates. Duty (MFN): 0.5%
- [2836.99.50.10](https://border.bot/countries/united-states/hs-codes/2836995010) Other, Other, Other, Zirconium carbonates. Duty (MFN): 3.7%
- [2836.99.50.50](https://border.bot/countries/united-states/hs-codes/2836995050) Other, Other, Other, Other. Duty (MFN): 3.7%

## In other countries

No other national tariff on border.bot has live lines under 2836.99 yet.

- [The Harmonized System text for 2836.99](https://border.bot/hs-codes/283699)

- Previous subheading: [2836.92](https://border.bot/countries/united-states/hs-codes/283692) Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate
- Next subheading: [2837.11](https://border.bot/countries/united-states/hs-codes/283711) Cyanides, cyanide oxides and complex cyanides

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2836.99?

The United States tariff splits HS 2836.99 (other: Other) into 6 national lines: 2836.99.10.00 (cobalt carbonates), 2836.99.20.00 (bismuth carbonate), 2836.99.30.00 (commercial ammonium carbonate and other ammonium carbonates), 2836.99.40.00 (lead carbonates) and 2 others.

### What is the duty on HS 2836.99 in the United States?

The general (MFN) duty differs by line: 4.2% on 2836.99.10.00, 5.5% on 2836.99.20.00, 1.7% on 2836.99.30.00, 0.5% on 2836.99.40.00, 3.7% on 2836.99.50.10 and 3.7% on 2836.99.50.50.

## 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/283699.json