2833.40.20.00 - Of sodium

This HTS category, 2833.40.20.00, specifically covers peroxosulfates (persulfates) that are derived from or composed of sodium. Peroxosulfates are inorganic chemical compounds characterized by the presence of the peroxide group (-O-O-) within the persulfate anion ([S₂O₈]²⁻). When this anion is combined with sodium ions, it forms various sodium persulfates. These compounds are typically powerful oxidizing agents and find applications in diverse industrial processes.

This specific classification distinguishes itself from its sibling category, 2833.40.60 ("Other"), by its explicit focus on sodium-based peroxosulfates. While the "Other" category would encompass peroxosulfates formed with different cations (e.g., potassium, ammonium), this node is exclusively for those containing sodium. This distinction is crucial for accurate import and export declarations, ensuring that the specific chemical composition dictates the correct tariff treatment.

As this is a leaf node within the HTS structure, there are no further subcategories. Therefore, classification within this code relies on the definitive presence of sodium within the peroxosulfate compound. Examples of goods falling under this classification would include sodium persulfate (Na₂S₂O₈) in its various forms, such as powder, granular, or crystalline. Its primary function as an oxidizing agent is a key characteristic to consider during classification.