2912.29.10.00 - Phenylacetaldehyde

This classification covers phenylacetaldehyde, an organic compound characterized by an aldehyde functional group attached to a phenyl group via a methylene bridge. It is primarily used as a fragrance ingredient, particularly for its floral, hyacinth-like scent, and as a chemical intermediate in the synthesis of pharmaceuticals and other organic compounds. Phenylacetaldehyde's classification here is specific to its structure and chemical nature as a cyclic aldehyde without other oxygen functions, falling under the broader heading for aldehydes.

This category is distinguished from its sibling, 2912.29.30.00, which specifically enumerates 3,4-dimethylbenzaldehyde, paraldehyde (USP grade), and p-tolualdehyde. While all are cyclic aldehydes without other oxygen functions, this category captures other compounds meeting that description that are not explicitly listed in the sibling. The sibling 2912.29.60, also at this level, serves as a general "catch-all" for remaining cyclic aldehydes without other oxygen functions that do not fit into more specific classifications.

As a leaf node, this HTS code does not have further subcategories. Therefore, the focus for classification within 2912.29.10.00 is on confirming that the imported or exported substance is indeed phenylacetaldehyde and meets the criteria of a cyclic aldehyde without additional oxygen-containing functional groups beyond the aldehyde. Classification relies on precise chemical identification and adherence to the descriptive notes for Chapter 29.