# HS code 2836.99: Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate

> HS code 2836.99 covers carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate, other than those classified in 2836.91 and 2836.92. It sits in heading 28.36 (carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate) in chapter 28 (inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes). Other goods of heading 28.36 are classified under 2836.20 (disodium carbonate), 2836.30 (sodium hydrogencarbonate (sodium bicarbonate)), 2836.40 (potassium carbonates), 2836.50 (calcium carbonate) or 3 others.

Source: https://staging.border.bot/hs-codes/283699
Last updated: 13 October 2026

[HS codes](https://staging.border.bot/hs-codes) / [Chapter 28](https://staging.border.bot/hs-codes/28) / [28.36](https://staging.border.bot/hs-codes/2836) / [2836.99](https://staging.border.bot/hs-codes/283699)

## Key facts

- HS code: 2836.99
- Covers: Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate
- Heading: [28.36: Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate](https://staging.border.bot/hs-codes/2836)
- Chapter: [28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes](https://staging.border.bot/hs-codes/28)
- Edition: HS2022
- Duty rates: [Set by each country’s tariff](https://staging.border.bot/countries)

## What this code covers

HS code 2836.99 covers carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate, other than those classified in 2836.91 and 2836.92.

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

## What it doesn’t cover

Other goods of heading 28.36 are classified under 2836.20 (disodium carbonate), 2836.30 (sodium hydrogencarbonate (sodium bicarbonate)), 2836.40 (potassium carbonates), 2836.50 (calcium carbonate) or 3 others.

- [2836.20](https://staging.border.bot/hs-codes/283620) Disodium carbonate
- [2836.30](https://staging.border.bot/hs-codes/283630) Sodium hydrogencarbonate (sodium bicarbonate)
- [2836.40](https://staging.border.bot/hs-codes/283640) Potassium carbonates
- [2836.50](https://staging.border.bot/hs-codes/283650) Calcium carbonate
- [2836.60](https://staging.border.bot/hs-codes/283660) Barium carbonate
- [2836.91](https://staging.border.bot/hs-codes/283691) Other: Lithium carbonates
- [2836.92](https://staging.border.bot/hs-codes/283692) Other: Strontium carbonate

## How it is structured

2836.99 is a six-digit subheading. Its first two digits, 28, are the chapter; the first four, 2836, are heading 28.36; the last two, 99, identify the subheading within the heading.

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

- Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
- Heading 28.36: Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate
- Within the heading: Other
- Subheading 2836.99: Other

## In other countries

No national tariff lines under 2836.99 are live on border.bot yet. Tariffs built on the Harmonized System (HS2022) use 2836.99 at six digits and add their own digits after it.

- Previous subheading: [2836.92](https://staging.border.bot/hs-codes/283692) Other: Strontium carbonate
- Next subheading: [2837.11](https://staging.border.bot/hs-codes/283711) Cyanides and cyanide oxides: Of sodium

## Frequently asked questions

### What does HS code 2836.99 cover?

HS code 2836.99 covers carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate, other than those classified in 2836.91 and 2836.92.

### Which heading and chapter is HS code 2836.99 in?

HS code 2836.99 is in heading 28.36 (carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate) in chapter 28 (inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes).

### Where are goods of heading 28.36 classified when 2836.99 doesn’t fit?

Other goods of heading 28.36 are classified under 2836.20 (disodium carbonate), 2836.30 (sodium hydrogencarbonate (sodium bicarbonate)), 2836.40 (potassium carbonates), 2836.50 (calcium carbonate) or 3 others.

## 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/283699.json