HS Code 2833
Sulphates, Alums and Persulphates
HS code 2833 covers inorganic sulphates, alums, and peroxosulphates used in water treatment, construction materials, and as chemical catalysts.
4-digit Section VIBulk | FCL
HS Code 2833 — Sulphates, Alums and Persulphates
This is a broad category of mineral salts derived from sulphuric acid. They are used in diverse applications including water purification (alums), construction (calcium sulphate), and as oxidants in polymerisation (persulphates).
What's included
- Sodium sulphate (Glauber's salt)
- Magnesium sulphate (Epsom salts)
- Aluminium sulphate
- Nickel sulphate
- Ammonium persulphate
- Alums
What's excluded
- Natural barium sulphate (Barytes) → use
2511(Unprocessed natural minerals remain in Chapter 25.) - Ammonium sulphate fertiliser → use
3102(Specifically classified as nitrogenous fertiliser.)
Common examples
- Aluminium sulphate for water treatment
- Nickel sulphate hexahydrate for plating
- Magnesium sulphate USP grade
- Anhydrous sodium sulphate
Frequently asked questions
Is Epsom salt classified under chemicals or medicines?
Pure magnesium sulphate is classified here in HS 2833, even if used for bath salts or pharmaceuticals.
Trade & shipping notes
- Typical duty range: 0.0% - 6.0%
- Documentation: Nickel and Copper sulphates often trigger additional environmental tax or oversight.
- Typical shipping mode: Bulk | FCL
- Top exporters: China, Spain, Germany, USA
- Top importers: Brazil, USA, Japan, India
Related HS codes
Key takeaway
Diverse chemical group ranging from harmless bath salts (Magnesium Sulphate) to hazardous oxidising persulphates.
Related HS codes
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