2903.91.20.00 - o-Dichlorobenzene

This HTS classification, 2903.91.20.00, specifically designates o-dichlorobenzene. This category falls under halogenated derivatives of aromatic hydrocarbons, characterized by the presence of chlorine atoms attached to a benzene ring. O-dichlorobenzene is an organic compound where two chlorine atoms are substituted on the benzene ring at adjacent (ortho) positions. Its primary use is as a solvent for high-melting-point materials, such as gums, resins, waxes, and as a degreasing agent, particularly in industrial cleaning applications.

Distinguishing this classification from its siblings is crucial for accurate import and export processes. The sibling category 2903.91.10.00 covers chlorobenzene, which has only one chlorine atom substituted on the benzene ring. Another sibling, 2903.91.30.00, pertains to p-dichlorobenzene, where the two chlorine atoms are positioned at opposite (para) positions on the benzene ring. The distinct positioning and number of chlorine atoms are the key differentiators between these classifications, impacting their physical properties, chemical reactivity, and commercial applications.

As 2903.91.20.00 is a leaf node in the HTS, there are no further subcategories. Therefore, the focus remains on precisely identifying o-dichlorobenzene based on its chemical structure and common industrial uses. Proper identification relies on understanding that this code specifically addresses the ortho isomer of dichlorobenzene, differentiating it from other isomers and related chlorinated aromatic compounds.