HS Code for Ammonium persulphate

Ammonium persulphate, also known as ammonium peroxodisulphate, is an inorganic chemical compound. The Harmonized System (HS) classifies inorganic chemicals primarily under Chapter 28. Specifically, heading 2833 covers sulphates, alums, and peroxosulphates (persulphates). Subheading 2833.40 is precisely designated for "Peroxosulphates (persulphates)". This classification is appropriate because ammonium persulphate is a peroxosulphate, aligning directly with the chemical nature and explicit mention within the HS code description. Its unique chemical structure, featuring the peroxo group, distinguishes it from other sulphate compounds and places it accurately within this specific subheading.

Products Included

• Ammonium peroxodisulphate
• Potassium persulphate
• Sodium persulphate
• Other inorganic peroxosulphates

Common Misclassification

Ammonium persulphate can be commonly misclassified with other inorganic sulphates, particularly those under HS code 2833.29, which covers "Other sulphates" (e.g., ammonium sulphate). The critical distinction lies in the "peroxo" or "per" prefix in peroxosulphates, indicating a higher oxidation state and a different chemical structure (containing the S₂O₈^2- ion) compared to simple sulphates (SO₄^2-). This structural difference is fundamental to its classification under 2833.40, rather than the general sulphates of 2833.29. Careful attention to the full chemical name and structure is essential to avoid this misclassification.

FAQ

What is the HS code for Ammonium persulphate?

The HS code for Ammonium persulphate is 283340.

What is the primary industrial application of Ammonium persulphate?

Ammonium persulphate is primarily used as a powerful oxidizing agent, a bleaching agent, and a polymerization initiator. It finds extensive application in the electronics industry for etching printed circuit boards, in hair bleaching products, and as a starter for emulsion polymerization processes.