2808.00.00 - Nitric acid; sulfonitric acids

This HTS category, 2808.00.00, encompasses nitric acid and sulfonitric acids. These are inorganic chemical compounds, with nitric acid being a highly corrosive mineral acid with the chemical formula HNO₃. Sulfonitric acids, also known as mixed acids, are mixtures of nitric acid and sulfuric acid, commonly used in nitration processes. Both are characterized by their strong oxidizing properties and are typically found as clear to yellowish liquids.

Distinguishing this category from its siblings at the HTS Root level is straightforward. While siblings under Chapter 01, for instance, deal with live animals, 2808.00.00 falls within Section VI, which is dedicated to chemical products. The scope here is specifically limited to these two types of strong inorganic acids, unlike other headings in Chapter 28 that cover a broader range of inorganic chemicals such as halogens, oxides, or salts.

Within this heading, two distinct subcategories are recognized to facilitate more precise classification. The subdivision into 2808.00.00.10 for "Nitric acid" and 2808.00.00.20 for "Sulfonitric acids" allows for specific identification based on the chemical composition. This differentiation is crucial for customs purposes, as the specific properties and applications of pure nitric acid versus mixed acid can vary, influencing trade and regulatory considerations.