2921.59.04.00 - 1,8-Diaminonaphthalene (1,8-Naphthalenediamine)

This HTS classification covers 1,8-Diaminonaphthalene, also known as 1,8-Naphthalenediamine. This compound is characterized by the presence of two amino groups attached to the naphthalene ring system at the 1 and 8 positions. Its primary use is as an intermediate in the synthesis of dyes, pigments, and other organic chemicals.

Within the broader category of aromatic polyamines and their derivatives, this specific subcategory distinguishes itself by the unique structural arrangement of the two amino groups on the naphthalene core. Unlike its siblings which feature different aromatic ring systems, diverse arrangements of amino groups, or additional functional groups like sulfonic acids or methylene bridges, 1,8-Diaminonaphthalene is defined by the ortho-substitution pattern on a bicyclic aromatic hydrocarbon.

As a leaf node in this classification system, 2921.59.04.00 represents a specific, single chemical compound. There are no further subcategories under this code, meaning that any substance fitting the description of 1,8-Diaminonaphthalene will be classified here, provided it does not meet the criteria for any of the other "Other" sibling codes, which cover distinct compounds or groups of compounds with different structural or chemical properties.