9902.02.15 - 1,2-Pentanediol (CAS No. 5343-92-0) (provided for in subheading 2905.39.90)

This HTS classification, 9902.02.15, specifically covers 1,2-Pentanediol, identified by CAS No. 5343-92-0. This organic compound is a diol, meaning it contains two hydroxyl (-OH) functional groups. Its classification within Chapter 99 indicates it is subject to temporary legislation or modifications, often related to trade agreements or specific import restrictions. The parenthetical note "(provided for in subheading 2905.39.90)" signifies that its primary classification under the standard Harmonized System is within the chemical chapters, specifically for other diols not elsewhere specified.

As a leaf node within Chapter 99, this entry does not have further subdivisions. Its purpose is to provide a distinct tariff treatment for 1,2-Pentanediol, separate from its general chemical classification. Therefore, it does not distinguish itself from siblings in the typical hierarchical sense of the HTS. Instead, its uniqueness lies in the specific, temporary regulatory provisions it falls under, which supersede or modify the treatment it would receive based solely on its chemical nature in Chapter 29.