2921.19.61 - Other

This HTS category, 2921.19.61, pertains to a specific group of acyclic monoamines and their derivatives, falling under the broader classification of "Other" within the "Acyclic monoamines and their derivatives; salts thereof" heading. These compounds are characterized by their amine functionality and their open-chain (acyclic) carbon structures.

This "Other" category serves as a residual grouping for acyclic monoamines that do not fit into more specifically defined subheadings at the 2921.19 level. It is distinct from sibling categories such as 2921.19.11.00, which enumerates specific ethyl and propyl/butyl monoamines, and 2921.19.31.00, which lists particular compounds like 3-Amino-3-methyl-1-butyne and its derivatives. The materials classified here are typically chemical intermediates or specialized compounds not captured by the more common examples.

The subcategories within 2921.19.61 further refine the classification of these "Other" acyclic monoamines. This includes specific N,N-dialkyl-2-chloroethylamines and their protonated salts (2921.19.61.10), as well as critically important chemical agents like Bis(2-chloroethyl)ethylamine (2921.19.61.20), Chlormethine (2921.19.61.30), and Trichlormethine (2921.19.61.40), which have distinct chemical structures and often specialized industrial or research applications. A final residual subheading, 2921.19.61.95, exists for any remaining compounds within this group that do not meet the criteria for the more specifically enumerated subcategories.