9902.02.41 - 2,5-Dimethyl-2,5-bis[(2-methyl-2-propanyl)peroxy]hexane (CAS No. 78-63-7) (provided for in HTS subheading 2909.60.50).

This HTS category, 9902.02.41, specifically classifies 2,5-Dimethyl-2,5-bis[(2-methyl-2-propanyl)peroxy]hexane, also known by its CAS number 78-63-7. This chemical compound is a diacyl peroxide, commonly used as an initiator in polymerization reactions, particularly in the production of plastics and resins. Its classification falls under Chapter 99, which denotes temporary legislation and special provisions.

Unlike the primary HTS chapters (01-97) which categorize goods based on their inherent nature and material composition, Chapter 99 headings are used for specific, often time-limited, trade policy measures. Therefore, this category is distinct from sibling categories such as live animals (0101-0105) or other chemical compounds that might be classified under Chapters 28 or 29. The presence of "provided for in HTS subheading 2909.60.50" indicates that while the chemical itself has a permanent classification, its importation under this specific 9902 heading is subject to a temporary provision or restriction.

As a leaf node, HTS 9902.02.41 has no further subcategories. Its purpose is to apply a specific trade measure, such as a tariff rate quota, temporary duty suspension, or specific import restriction, to this particular chemical compound that would otherwise be classified under a permanent HTS code. Importers must consult the accompanying notes and annotations within Chapter 99 to understand the precise conditions and duration of this classification.