2917.34.01 - Other esters of orthophthalic acid

This category, HTS Code 2917.34.01, encompasses other esters derived from orthophthalic acid, excluding those specifically enumerated in preceding subheadings. These are organic compounds where the carboxyl groups of orthophthalic acid have reacted with alcohols to form ester linkages. This classification serves as a residual category for orthophthalates not specifically listed, ensuring comprehensive coverage of this chemical family.

Distinguishing 2917.34.01 from its sibling categories is crucial for accurate classification. For instance, while siblings like 2917.32.00.00 and 2917.33.00.00 specifically identify dioctyl, dinonyl, and didecyl orthophthalates based on the specific alcohol radical forming the ester, this category covers all other orthophthalate esters. Similarly, it is distinct from phthalic anhydride (2917.35.00.00), which is the anhydride form of orthophthalic acid, not an ester.

The subcategories within 2917.34.01 provide further granularity. 2917.34.01.10 specifically enumerates dibutyl orthophthalate, a commonly encountered plasticizer, differentiating it due to its widespread use and distinct properties. The residual category, 2917.34.01.50, captures all remaining orthophthalate esters that do not fall under the specific subheadings, thereby ensuring precise tariff treatment for a broad spectrum of chemical intermediates and finished products.