# 283311 — Sulphates; alums; peroxosulphates (persulphates): Disodium sulphate

HS code 283311 classifies Sulphates; alums; peroxosulphates (persulphates): Disodium sulphate. 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:** `283311`

## Description

Sulphates; alums; peroxosulphates (persulphates) : Sodium sulphates : Disodium sulphate

## Duty rates

| Country | Rate | Programme |
| --- | --- | --- |
| US United States | Free–0.4% | MFN |

Rates effective as of 2026-01-01.

---
Source: https://hscode.eximagent.ai/28/283311
Last updated: 2026-06-03
Find importers, tariffs and sanctions for 283311 with EximAgent — https://eximagent.ai