Product classification

HS code for Zinc sulphate: 2833.29

Sulphates, n.e.c. in item no. 2833.2.

Classification of zinc sulphate under HS 2833.29

Zinc sulphate is classified under HS code 2833.29. This code is located within Chapter 28, which encompasses inorganic chemicals, precious metal compounds, and radioactive elements. Heading 2833 is dedicated to sulphates, alums, and peroxosulphates. Because zinc sulphate is not specifically named in the preceding subheadings (such as those for sodium, magnesium, or aluminum sulphates), it falls into the residual category of 2833.29. The classification requires the product to be a chemically defined compound, regardless of its hydration state. Whether it is presented as a monohydrate, heptahydrate, or in its anhydrous form, it remains within this heading. This follows General Rules of Interpretation (GRI) 1 and 6, ensuring that the chemical identity takes precedence over the intended use unless the use is specifically defined by another heading in the nomenclature. In industrial contexts, zinc sulphate is often used in water treatment, as a mordant in dyeing, and in the production of rayon. For customs purposes, the purity and chemical structure are the primary factors in confirming 2833.29 as the correct code.

Covers
  • Zinc sulphate monohydrate
  • Zinc sulphate heptahydrate
  • Anhydrous zinc sulphate
  • Technical grade zinc sulphate
  • Pharmaceutical grade zinc sulphate (bulk)
Also under 2833.29
  • Epsom Salt (various brands)
  • Miraclo (fertilizer)
  • Blue Vitriol (copper sulphate)
  • Alum (aluminium sulphate in some contexts)

Codes often confused with 2833.29

Common mistake. Zinc sulphate is often misclassified under 3105.90 if it is packaged and sold specifically as a fertilizer. However, if it is a pure chemical, 2833.29 is correct. It may also be confused with 3004.90 if it is prepared as a medicament in measured doses for therapeutic use. Another common error is using 2833.19, which is reserved for sodium sulphates.

3105.90Fertilizers, mineral or chemical; n.e.c. in heading no. 31053004.90Medicaments; consisting of mixed or unmixed products n.e.c. in heading no. 3004, for therapeutic or prophylactic uses, packaged for retail sale2833.19Sodium sulphates; other than disodium sulphate

Top exporters and importers of HS 283329 (the code used for zinc sulphate), 2025

In 2025, the largest exporter of HS 283329 (the code used for zinc sulphate) in UN Comtrade data was China, with 32% of world exports; the largest importer in UN Comtrade data was China, with 19% 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 283329, not only zinc sulphate.

Top exporters 2025 · share of world exports

  1. 1 China $527M
  2. 2 Chile $213M
  3. 3 Indonesia $104M

World total: $1.7B Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 China $345M
  2. 2 Japan $184M
  3. 3 United States $183M

World total: $1.8B 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 that did not report are estimated from what other countries recorded trading with them. 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 zinc sulphate

Brazil splits HS 2833.29 into 8 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 zinc sulphate

What is the HS code for Zinc sulphate?

The HS code for Zinc sulphate is 283329 (Sulphates; n.e.c. in item no. 2833.2). The HS code for zinc sulphate is 2833.29, which covers other sulphates not specifically mentioned elsewhere in heading 2833.

How do I classify Zinc sulphate for customs?

Zinc sulphate is classified under HS code 283329 — Sulphates; n.e.c. in item no. 2833.2. This is a 6-digit subheading level code.

Does the hydration state change the HS code?

No, whether the zinc sulphate is monohydrate or heptahydrate, it is still classified under 2833.29 as long as it remains a chemically defined inorganic compound.

Which countries are the top exporters of zinc sulphate (HS 283329)?

In 2025, the top exporters of HS 283329 (the code used for zinc sulphate) in UN Comtrade data were China ($527M, 32% of world exports), Chile ($213M) and Indonesia ($104M). World exports came to about $1.7B, 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 zinc sulphate (HS 283329)?

In 2025, the top importers of HS 283329 (the code used for zinc sulphate) in UN Comtrade data were China ($345M, 19% of world imports), Japan ($184M) and the United States ($183M). World imports came to about $1.8B, 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 Zinc sulphate the same in all countries?

The base HS code 283329 for Zinc 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 zinc sulphate in Brazil?

Brazil splits HS 283329 into 8 NCM codes, so the right one for zinc sulphate depends on the product's details: 2833.29.10 (Antimony sulphate), 2833.29.20 (Lithium sulphate), 2833.29.30 (Strontium sulphate), 2833.29.40 (Ferrous sulphate), 2833.29.50 (Neutral lead sulphate), 2833.29.60 (Chromium sulphate), and more.