2833.24.00.00 - Of nickel

This classification pertains to sulfates of nickel. These are inorganic chemical compounds characterized by the presence of the sulfate radical ($SO_4^{2-}$) bonded to nickel ions. Examples include nickel sulfate hexahydrate ($NiSO_4 \cdot 6H_2O$) and other hydrated or anhydrous forms of nickel sulfate. These substances often appear as crystalline solids and find applications in electroplating, battery production, and as pigments.

This category is distinguished from its siblings by its specific elemental composition. Unlike the sulfates of magnesium, aluminum, copper, or barium covered in adjacent codes, this classification is exclusively for compounds where nickel is the cation. The "Of nickel" descriptor directly links these compounds to the unique properties and applications associated with nickel-based chemicals.

As a leaf node in the HTS classification system, 2833.24.00.00 does not have further subcategories. Therefore, the primary classification focus is on accurately identifying nickel sulfates based on their chemical composition and ensuring they are not erroneously classified under sulfates of other metals or other categories within Chapter 28. The context of "Other sulfates" under 2833.29 indicates that this specific nickel sulfate category is a defined grouping, separate from a general "other" classification for sulfates not explicitly listed.