2902 - Cyclic hydrocarbons:

HTS code 2902 encompasses a specific group of cyclic hydrocarbons, which are organic compounds characterized by having their atoms arranged in a ring structure. This category is distinct from other Sections and Chapters within the HTS that cover different classes of chemical products or materials like live animals, minerals, or plastics. Within Section VI, Chapter 29 specifically focuses on organic chemicals, and 2902 pinpoints a subset of these that are defined by their cyclic hydrocarbon nature.

Unlike sibling categories that might cover different types of organic compounds (e.g., alcohols, aldehydes, or acyclic hydrocarbons), HTS 2902 is exclusively for hydrocarbons that form ring structures. This classification focuses on the fundamental molecular architecture rather than specific functional groups that might be attached to the ring, or the presence of non-hydrocarbon elements.

The subcategories within 2902 further delineate these cyclic hydrocarbons based on their specific chemical structures and common names. For instance, specific entries exist for widely traded cyclic hydrocarbons like benzene, toluene, and xylenes, which are fundamental building blocks in the petrochemical industry. Other subcategories, such as styrene, ethylbenzene, and cumene, represent more complex cyclic hydrocarbons with specific industrial applications. The "Other" category (2902.90) serves as a catch-all for cyclic hydrocarbons not otherwise specified, ensuring comprehensive coverage.