9902.03.80 - m-Phenylenediamine (CAS No. 108-45-2) (provided for in subheading 2921.51.10)

This HTS category, 9902.03.80, specifically classifies m-Phenylenediamine (CAS No. 108-45-2). This organic compound is recognized for its use as an intermediate in various chemical processes, notably in the production of dyes, pigments, and polymers. Its precise identification by CAS number ensures accurate import and export declarations.

Given its placement within Chapter 99, this category represents a temporary legislative provision or modification related to trade agreements or agricultural import restrictions. Unlike the broad categories found in Chapters 1 through 98, which describe general classes of merchandise based on material and function, this Chapter 99 heading signifies a specialized regulatory measure applied to a specific chemical substance. Therefore, its distinction from sibling categories, which typically cover live animals or other fundamental commodity groups, lies in its nature as a temporary, policy-driven classification rather than a permanent trade designation.

As this is a leaf node within the HTS database, there are no further subcategories branching from 9902.03.80. The classification is specific to m-Phenylenediamine as described and linked to its primary tariff classification under subheading 2921.51.10. This indicates that while the substance itself falls under Chapter 29, its import may be subject to the specific provisions or restrictions detailed under this Chapter 99 heading.