2811.29 - Other:

This HTS category, 2811.29, encompasses a range of inorganic oxygen compounds of nonmetals that are not specifically classified elsewhere within subheading 2811.2. It captures substances that, while containing oxygen and belonging to the broad group of inorganic compounds of nonmetals, do not fit into more precise classifications like carbon dioxide or silicon dioxide. These compounds are typically characterized by their chemical composition and their roles in various industrial processes.

Distinguishing this category from its sibling, 2811.21 (Carbon dioxide) and 2811.22 (Silicon dioxide), is crucial. While all fall under "Other inorganic oxygen compounds of nonmetals," 2811.29 serves as a residual category for compounds that do not meet the specific definitions of carbon dioxide or silicon dioxide. Therefore, importers and exporters must verify that their goods are not covered by these more specific subheadings before classifying them under 2811.29.

Within this broad category, several specific subdivisions exist to provide more granular classification. These include arsenic trioxide (2811.29.10.00), selenium dioxide (2811.29.20.00), and sulfur dioxide (2811.29.30.00), each representing distinct inorganic oxygen compounds with unique chemical properties and industrial applications. The remaining portion, 2811.29.50.00, is designated for all other inorganic oxygen compounds of nonmetals that are not otherwise specified, acting as a further residual category for highly specific or less common substances.