2834.10 - Nitrites:

This category, HTS 2834.10, specifically covers nitrites. Nitrites are inorganic salts or esters of nitrous acid, characterized by the presence of the nitrite ion ($NO_2^-$). They are distinct from nitrates, which contain the nitrate ion ($NO_3^-$). While both nitrites and nitrates fall under the broader heading of Chapter 28 for inorganic chemicals, this subdivision isolates compounds solely based on their nitrite composition.

The classification under HTS 2834.10 is important for differentiating the specific chemical properties and industrial applications of nitrites. These compounds can be used in a variety of applications, including as food preservatives, in the production of dyes and pigments, and as corrosion inhibitors. Understanding the distinction between nitrites and nitrates is crucial for accurate tariff application, as their respective uses and regulatory requirements may differ significantly.

Within HTS 2834.10, further subdivisions exist to account for variations in the metal cation associated with the nitrite ion. The subcategories, 2834.10.10.00 "Of sodium" and 2834.10.50.00 "Other," allow for the specific identification of sodium nitrite, a common industrial and food-grade chemical, and all other nitrites not specifically enumerated as sodium nitrite. This hierarchical structure ensures precise classification based on the chemical identity of the imported goods.