2841.80.00.10 - Of ammonium

This HTS category, 2841.80.00.10, specifically classifies tungstates (wolframates) that are derived from ammonium. Tungstates are salts or esters of tungstic acid. This subcategory focuses on those compounds where ammonium is the cation, forming salts with the tungstate anion. These materials are typically inorganic chemical compounds utilized in various industrial applications, including as catalysts, in the production of pigments, and as components in metallurgical processes.

Distinguishing this category from its siblings is crucial for accurate classification. While all fall under the broader heading of tungstates, 2841.80.00.10 is exclusively for ammonium tungstates. It differs from 2841.80.00.20, which covers tungstates derived from calcium, and 2841.80.00.50, which encompasses all other tungstates not specifically listed under the ammonium or calcium categories. The key differentiating factor is the specific metal or cation present in the tungstate salt.

As a leaf node, this category does not have further subdivisions. Therefore, accurate classification relies on confirming that the tungstate compound in question is indeed an ammonium salt. Importers and exporters should verify the chemical composition and ensure the absence of other primary cations like calcium when classifying goods under this specific HTS code.