2829 - Chlorates and perchlorates; bromates and perbromates; iodates and periodates:

HTS Code 2829 encompasses a specific group of inorganic chemical salts, namely chlorates, perchlorates, bromates, perbromates, iodates, and periodates. These compounds are characterized by the presence of a halogen (chlorine, bromine, or iodine) in its highest oxidation state, bonded to oxygen. They are commonly utilized in various industrial applications, including oxidizing agents in pyrotechnics, disinfectants, and as components in specialty chemicals.

When classifying within Chapter 28, it is crucial to distinguish 2829 from other chemical headings. While many inorganic chemicals are covered in this chapter, 2829 is specifically reserved for these halogen-oxygen compounds. For instance, simpler halogen salts like sodium chloride (Chapter 25) or basic oxides and hydroxides of halogens (typically covered in other headings within Chapter 28) are excluded from this category. The defining characteristic is the specific combination of a halogen in a high oxidation state with oxygen.

The subcategories within 2829 further refine the classification based on the specific halogen-oxygen anion. Heading 2829.10 is dedicated to chlorates and perchlorates, which are the most commonly encountered within this group. The remaining items, including bromates, perbromates, iodates, and periodates, fall under the residual heading 2829.90, "Other." This structure allows for granular classification based on the precise chemical composition of the salt.