2707.99.40.00 - Carbazole having a purity of 65 percent or more by weight

This classification covers carbazole, a specific aromatic organic compound, when it meets a minimum purity threshold of 65 percent by weight. Carbazole is typically derived from coal tar distillation. This designation is important for customs purposes, ensuring that such purified carbazole is correctly identified and taxed upon import or export.

Within the broader category of "Other" products of coal tar distillation, this subcategory for purified carbazole is distinct from other entries based on its chemical identity and purity. While sibling categories like light oil, picolines, and phenols represent other specific chemical fractions or compounds also derived from coal tar, this classification focuses solely on carbazole meeting the specified purity criteria. The "Other" siblings generally encompass a broader range of less specifically defined coal tar derivatives.

As this is a leaf node in the HTS classification system, there are no further subdivisions under 2707.99.40.00. Therefore, classification at this level depends entirely on the substance being carbazole and achieving the 65 percent purity threshold. For practical classification, laboratory analysis confirming the purity is typically required.