HS Code for Potash

Potash, specifically in the form of potassium carbonate, is classified under HS code 2836.40. This code is situated within Chapter 28, which covers inorganic chemicals, and Heading 2836, which is dedicated to carbonates and peroxocarbonates. Potassium carbonate (K2CO3) is an inorganic salt that appears as a white, deliquescent powder. It is classified here because it is a chemically defined compound. The classification process requires distinguishing between industrial-grade chemicals and mineral fertilizers. While 'potash' is a broad term often used in the agricultural industry to refer to various potassium-bearing minerals and chemicals, the specific chemical potassium carbonate is strictly assigned to 2836.40. This substance is widely used in the production of glass, soap, and as a buffering agent in various industrial processes. It is produced either through the electrolysis of potassium chloride or by reacting potassium hydroxide with carbon dioxide.

Products Included

• Anhydrous potassium carbonate
• Hydrated potassium carbonate
• Pearl ash (refined potassium carbonate)
• Salt of tartar
• Calcined potash for industrial use

Common Misclassification

The most common misclassification occurs with HS code 3104, which covers mineral or chemical fertilizers (potassic). While potassium chloride and potassium sulfate are often called potash in trade, they belong in 3104. Potassium carbonate (2836.40) is rarely used as a direct fertilizer due to its alkalinity and cost. Another confusion point is 2815.20 for potassium hydroxide (caustic potash), which is a strong base and chemically distinct from the carbonate form.

FAQ

What is the HS code for potash?

The HS code for potassium carbonate (potash) is 2836.40. However, if you are referring to potassic fertilizer, the code is 3104.

Is caustic potash classified here?

No, caustic potash is potassium hydroxide and is classified under HS code 2815.20.