2826 - Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts:

HTS Code 2826 encompasses a range of inorganic fluorine compounds, specifically including simple fluorides, fluorosilicates, and fluoroaluminates. These substances are characterized by the presence of fluorine bonded to other elements, forming salts or complex structures. This category is distinct from sibling categories within Section VI, such as live animals (Chapter 01) or mineral products (Chapter 25), by its focus on chemically synthesized or naturally occurring inorganic chemical substances.

Within HTS 2826, further breakdown is provided to distinguish specific types of complex fluorine salts. The subcategories aim to provide more granular classification based on the metallic or non-metallic components forming the salt with fluorine. For instance, sodium hexafluoroaluminate, also known as synthetic cryolite, is specifically listed, highlighting its commercial importance and distinct chemical identity.

The "Other" subcategory (2826.90) is a catch-all for complex fluorine salts and other fluorides not specifically enumerated elsewhere within this heading. This allows for the classification of a broad array of fluorine-containing inorganic compounds that do not fit into the more precisely defined subheadings. Understanding the specific chemical composition and the nature of the salt formed with fluorine is crucial for accurate classification under this heading.