# 283640 — Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate…: Potassium carbonates

HS code 283640 classifies Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate…: Potassium carbonates. It belongs to Chapter 28 (Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes) of Section VI (Products of the chemical or allied industries) of the Harmonized System. Duty rates are recorded for 1 country.

> Section VI · Products of the chemical or allied industries
> Chapter 28 · Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes

**HS code:** `283640`

## Description

Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate : Potassium carbonates

## Duty rates

| Country | Rate | Programme |
| --- | --- | --- |
| US United States | 1.3%–1.9% | MFN |

Rates effective as of 2026-01-01.

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Source: https://hscode.eximagent.ai/28/283640
Last updated: 2026-06-03
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