9902.05.57 - 3-(1,3-Benzodioxol-5-yl)-2-methylpropanal (Helional) (CAS No. 1205-17-0) (provided for in subheading 2932.99.70)

This HTS classification, 9902.05.57, specifically covers the aromatic chemical compound known as 3-(1,3-Benzodioxol-5-yl)-2-methylpropanal, also commonly referred to as Helional (CAS No. 1205-17-0). This designation is provided for in subheading 2932.99.70, indicating that while it falls under the broader provisions for heterocyclic compounds containing an oxygen hetero-atom, this particular entry in Chapter 99 signifies a temporary or special classification, often related to trade agreements or specific import restrictions. Helional is primarily utilized as a fragrance ingredient in perfumes, cosmetics, and household products, valued for its fresh, floral, and slightly aldehydic scent profile.

As this node is a leaf node within Chapter 99, it represents a highly specific entry and does not have further subcategories. Its distinction from sibling categories, which generally encompass broader classes of goods or temporary legislation categories, lies in its precise identification of a single, well-defined chemical substance. Unlike the general headings in Chapter 99 which might relate to temporary modifications or additional import restrictions across various product types, 9902.05.57 zeroes in on a particular chemical compound with a defined CAS number, ensuring its distinct classification for trade purposes. The inclusion within Chapter 99 signifies that its treatment may be subject to specific conditions or temporary measures beyond its standard classification under Chapter 29.