2841.80.00 - Tungstates (wolframates)

This HTS category, 2841.80.00, specifically covers tungstates (also known as wolframates). These are chemical compounds derived from tungstic acid. Tungstates are typically salts or esters of tungstic acid and play a significant role in various industrial applications, including in the production of pigments, catalysts, and high-speed steels, as well as in certain chemical reagents.

Within the broader group of salts of oxometallic or peroxometallic acids, this category is distinguished from its siblings by its exclusive focus on tungsten-based compounds. For instance, it is separate from the chromates and dichromates (2841.30 and 2841.50), which involve chromium, and the molybdates (2841.70), which are based on molybdenum.

The subcategories under 2841.80.00 further refine the classification of tungstates based on their cation. This includes specific classifications for ammonium tungstate (2841.80.00.10) and calcium tungstate (2841.80.00.20), recognizing the distinct properties and common uses of these particular forms. The "Other" category (2841.80.00.50) encompasses all other tungstate compounds not specifically listed, ensuring comprehensive coverage of this chemical group.