2506.10.00.10 - Sands (other than natural) containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron

This HTS classification, 2506.10.00.10, specifically covers artificial sands that meet stringent purity criteria. The primary characteristic defining this category is its composition, requiring at least 95 percent silica by weight and no more than 0.6 percent iron oxide. This focus on high silica content and minimal iron oxide distinguishes it from other forms of manufactured sand, ensuring a specific grade of material suitable for specialized applications.

Within the broader category of "Quartz (other than natural sands); quartzite," this subcategory differentiates itself by explicitly referencing manufactured or artificial sands. The sibling category, 2506.10.00.50, encompasses "Other" quartz materials, which would include natural sands and potentially other forms of processed quartz not meeting the precise chemical specifications of 2506.10.00.10. Therefore, the key differentiator is the artificial origin and the controlled chemical composition.

As this is a leaf node, there are no further subcategories to explore. Classification within this code hinges on the physical form (sand) and the precise chemical analysis to confirm the silica and iron oxide percentages. This ensures that only materials meeting the defined purity standards are classified under this specific heading, facilitating consistent import and export procedures.