Product classification

HS code for Sodium sulphate: 2833.11

Sodium sulphates, disodium sulphate.

Classification of sodium sulphate under HS 2833.11

Sodium sulphate is classified under HS code 2833.11. This code is situated in Chapter 28 (Inorganic chemicals) under heading 2833, which encompasses sulphates, alums, and peroxosulphates. Subheading 2833.11 is specifically allocated to disodium sulphate, the most common commercial form. The classification applies regardless of whether the product is in anhydrous form or hydrated form, such as the decahydrate known as Glauber's salt. The purity and method of production—whether as a byproduct of chemical processes like rayon manufacturing or through the processing of natural minerals—do not change the primary classification under 2833.11, provided the chemical identity remains disodium sulphate. This compound is a major commodity in the global chemical industry, primarily used as a filler in powdered home laundry detergents. It also plays a critical role in the Kraft process of wood pulp manufacture and in the glass industry to help remove small air bubbles from molten glass. The stability and non-reactive nature of the sulphate ion under standard conditions make it a predictable chemical for international trade classification. It is important to distinguish this inorganic salt from organic sulphates, which are classified in Chapter 29.

Covers
  • Anhydrous sodium sulphate
  • Sodium sulphate decahydrate
  • Glauber's salt
  • Salt cake (crude sodium sulphate)
  • Detergent grade sodium sulphate
  • High-purity analytical grade disodium sulphate
Also under 2833.11
  • BASF Sodium Sulphate
  • Solvay Sodium Sulphate
  • Merck Sodium Sulphate
  • PQ Corporation Sodium Sulphate

Codes often confused with 2833.11

Common mistake. Frequently confused with 2833.19, which covers other sodium sulphates such as sodium hydrogen sulphate (also known as sodium bisulphate). It should also not be confused with natural sodium sulphate under 2530.90 if it is traded as an unrefined mineral earth. Additionally, it is sometimes mistaken for sodium sulphite (2832.10) due to the similar name and appearance in powdered form.

2833.19Sodium sulphates; other than disodium sulphate2530.90Mineral substances; n.e.c. in chapter 252832.10Sulphites; of sodium

Top exporters and importers of HS 283311 (the code used for sodium sulphate), 2025

In 2025, the largest exporter of HS 283311 (the code used for sodium sulphate) in UN Comtrade data was China, with 52% of world exports; the largest importer in UN Comtrade data was Brazil, with 12% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.

Figures cover everything classified under HS 283311, not only sodium sulphate.

Top exporters 2025 · share of world exports

  1. 1 China $246M
  2. 2 Spain $131M
  3. 3 India $20M

World total: $473M Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 Brazil $78M
  2. 2 Bangladesh* ~$35M
  3. 3 Colombia $33M

World total: $651M Reported figures on UN Comtrade ↗

How these figures are built

109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).

Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.

Brazil NCM codes for sodium sulphate

Brazil splits HS 2833.11 into 2 NCM codes. Pick the one that matches your product:

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.

Questions about sodium sulphate

What is the HS code for Sodium sulphate?

The HS code for Sodium sulphate is 283311 (Sodium sulphates; disodium sulphate). The correct HS code for disodium sulphate is 2833.11.

How do I classify Sodium sulphate for customs?

Sodium sulphate is classified under HS code 283311 — Sodium sulphates; disodium sulphate. This is a 6-digit subheading level code.

What is the difference between 2833.11 and 2833.19?

Code 2833.11 is for disodium sulphate, while 2833.19 is for other sodium sulphates like sodium acid sulphate (bisulphate), which has different chemical properties and industrial uses.

Which countries are the top exporters of sodium sulphate (HS 283311)?

In 2025, the top exporters of HS 283311 (the code used for sodium sulphate) in UN Comtrade data were China ($246M, 52% of world exports), Spain ($131M) and India ($20M). World exports came to about $473M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Which countries are the top importers of sodium sulphate (HS 283311)?

In 2025, the top importers of HS 283311 (the code used for sodium sulphate) in UN Comtrade data were Brazil ($78M, 12% of world imports), Bangladesh (about $35M) and Colombia ($33M). World imports came to about $651M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Is the HS code for Sodium sulphate the same in all countries?

The base HS code 283311 for Sodium sulphate is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.

What is the NCM code for sodium sulphate in Brazil?

Brazil splits HS 283311 into 2 NCM codes, so the right one for sodium sulphate depends on the product's details: 2833.11.10 (Anhydrous disodium sulphate), 2833.11.90 (Other disodium sulphate).