7001.00.10.00 - Of fused quartz or other fused silica

This HTS category, 7001.00.10.00, specifically classifies cullet and waste or scrap of glass that is manufactured from fused quartz or other fused silica. Fused quartz and fused silica are distinct forms of amorphous silicon dioxide, known for their exceptional thermal and chemical stability, as well as their optical properties. Therefore, this classification applies to recycled or waste materials derived from products made of these specialized glass types, such as laboratory glassware, optical components, or high-temperature crucibles.

This category distinguishes itself from its sibling, 7001.00.20.00 ("Other"), by its specific material composition. While the "Other" category would encompass waste and scrap of all other types of glass (e.g., soda-lime glass, borosilicate glass), 7001.00.10.00 is exclusively for fused quartz and fused silica waste. The key differentiating factor is the inherent properties and manufacturing process of the source material.

As this is a leaf node, there are no further subcategories under 7001.00.10.00. Classification into this specific code is determined solely by the presence of fused quartz or fused silica as the base material of the glass waste or cullet. This designation ensures that specialized glass recycling streams are accurately tracked and categorized within the HTS system.