2921.42.16.00 - 2,4,5-Trichloroaniline

This classification covers specific aniline derivatives characterized by the presence of chlorine atoms attached to the aromatic ring in specific positions. Primarily, this includes compounds like 2,4,5-Trichloroaniline, which is a halogenated aromatic amine. These substances often serve as intermediates in the synthesis of dyes, pigments, pharmaceuticals, and agricultural chemicals. Their classification hinges on the precise arrangement and number of chlorine substituents on the aniline nucleus.

While other sibling categories at this level also detail aniline derivatives, this specific code distinguishes itself by its precise substitution pattern. For instance, it is distinct from N,N-dialkylanilines like N,N-Dimethylaniline or N-Ethylaniline, which have alkyl groups on the nitrogen atom. It also differs from other chlorinated aniline derivatives listed under 2921.42.18.00, as those entries group a broader range of chlorinated or nitrated anilines with different substitution patterns or functionalities. Similarly, it is differentiated from sulfanilic and metanilic acids, which contain sulfonic acid groups.

As this HTS code represents a leaf node, there are no further subdivisions. Classification at this level is determined by the exact chemical identity and specific structural features of the compound. The presence and position of the three chlorine atoms on the aniline ring are critical for its correct classification under 2921.42.16.00, differentiating it from all other aniline derivatives at this level.