# United States tariff lines under HS 2836.91

> The United States tariff splits HS 2836.91 (other: Lithium carbonates) into 2 national lines: 2836.91.00.10 (U.S.P. grade) and 2836.91.00.50 (other). The general (MFN) duty is 3.7% on all 2 lines.

Source: https://border.bot/countries/united-states/hs-codes/283691
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) / [2836.91](https://border.bot/countries/united-states/hs-codes/283691)

## Key facts

- HS subheading: [2836.91](https://border.bot/hs-codes/283691)
- Duty (MFN): 3.7%
- National lines: 2
- 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 2836.91

The United States tariff splits HS 2836.91 (other: Lithium carbonates) into 2 national lines: 2836.91.00.10 (U.S.P. grade) and 2836.91.00.50 (other).

The general (MFN) duty is 3.7% on all 2 lines.

- [2836.91.00.10](https://border.bot/countries/united-states/hs-codes/2836910010) Other, Lithium carbonates, U.S.P. grade. Duty (MFN): 3.7%
- [2836.91.00.50](https://border.bot/countries/united-states/hs-codes/2836910050) Other, Lithium carbonates, Other. Duty (MFN): 3.7%

## In other countries

No other national tariff on border.bot has live lines under 2836.91 yet.

- [The Harmonized System text for 2836.91](https://border.bot/hs-codes/283691)

- Previous subheading: [2836.60](https://border.bot/countries/united-states/hs-codes/283660) Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate
- Next subheading: [2836.92](https://border.bot/countries/united-states/hs-codes/283692) Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2836.91?

The United States tariff splits HS 2836.91 (other: Lithium carbonates) into 2 national lines: 2836.91.00.10 (U.S.P. grade) and 2836.91.00.50 (other).

### What is the duty on HS 2836.91 in the United States?

The general (MFN) duty is 3.7% on all 2 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/283691.json