2808.00.00.20 - Sulfonitric acids

This HTS classification covers sulfonitric acids. Sulfonitric acids are a mixture of nitric acid and sulfuric acid, typically used as a nitrating agent in various industrial processes, particularly in the production of explosives, dyes, and organic chemicals. Their characteristic is the presence of both nitrosonium ions and sulfate ions, contributing to their strong oxidizing and dehydrating properties.

This category is distinct from its sibling, 2808.00.00.10, which specifically covers nitric acid. While nitric acid is a component of sulfonitric acids, this classification is reserved for the combined mixture, not pure nitric acid. The presence of sulfuric acid alters the chemical properties and applications of the mixture, making it a separate classification for customs purposes.

As this is a leaf node, there are no further subcategories. Classification under 2808.00.00.20 is definitive for any product meeting the description of sulfonitric acids. Practical classification will rely on chemical analysis confirming the presence and relative proportions of both nitric and sulfuric acids, and its intended industrial application as a nitrating agent.