2815 - Sodium hydroxide (Caustic soda); potassium hydroxide (Caustic potash); peroxides of sodium or potassium:

HTS category 2815 encompasses fundamental inorganic alkali compounds, specifically sodium hydroxide and potassium hydroxide, often referred to as caustic soda and caustic potash, respectively. This category also includes the peroxides of both sodium and potassium. These substances are typically supplied in solid forms (pellets, flakes, or powder) or in aqueous solutions and are characterized by their strong alkaline nature and corrosive properties.

Distinguishing category 2815 from its siblings requires a focus on chemical composition and function. Unlike the live animals found in Chapter 01, or other chemical products in Section VI, category 2815 is strictly limited to these specific alkali hydroxides and their peroxides. The scope is defined by the chemical elements (sodium, potassium) and their combination with hydroxide or peroxide ions.

Within category 2815, further subdivisions differentiate between the primary alkali hydroxides and the less common peroxides. The subcategories distinguish between sodium hydroxide, potassium hydroxide, and the peroxides of sodium or potassium, reflecting differences in their chemical properties, industrial applications, and handling requirements. This allows for more granular classification based on the precise chemical compound being imported or exported.