2922.19.33.00 - N1-(2-Hydroxyethyl)-2-nitro-1,4- phenylenediamine;N1,N4,N4- Tris(2-hydroxyethyl)-2- nitro-1,4- phenylenediamine;N1,N4-Dimethyl-N1- (2-hydroxyethyl)-3-nitro-1,4- phenylene- diamine;N1,N4-Dimethyl-N1-(2,3-dihydroxy- propyl)-3-nitro-1,4- phenylenediamine; andN1-(2-Hydroxyethyl)-3-nitro-1,4- phenylenediamine

This HTS subcategory encompasses specific aromatic amino-alcohols characterized by the presence of nitro groups and additional hydroxyethyl or similar substituents on a phenylenediamine core. These compounds, such as N1-(2-Hydroxyethyl)-2-nitro-1,4-phenylenediamine and its related tris-substituted or dimethyl-substituted derivatives, are complex organic molecules primarily used as intermediates in the synthesis of dyes and pigments. Their classification is driven by the specific arrangement of amino, hydroxyl, and nitro functional groups on the aromatic ring structure.

Distinguishing this category from its sibling, 2922.19.20.00, is crucial for accurate classification. While both fall under "Other" aromatic amino-alcohols, this specific subcategory is reserved for phenylenediamine derivatives with particular nitro and hydroxyethyl substitutions, as detailed in its HTS description. The sibling category, conversely, covers distinct compounds like Michler's hydrol and Dibenzcarbinol, which possess different structural features and applications.

As this node represents a leaf category within the HTS, there are no further subcategories. Classification decisions at this level are therefore determined by precisely matching the imported merchandise to the detailed chemical names and descriptions provided. Importers must verify that their product's chemical structure and composition align with the specific compounds listed to ensure correct duty assessment and regulatory compliance.