2811.19.61 - Other

This classification, HTS 2811.19.61, encompasses "Other" inorganic acids that do not fall under more specific subheadings within the broader category of other inorganic acids. These are inorganic acids containing oxygen, excluding those explicitly listed elsewhere. The scope is broad, covering a range of acidic compounds that are inorganic in nature and characterized by the presence of oxygen within their molecular structure, but do not fit into predefined categories like arsenic or hydrobromic acid.

Distinguishing this category from its siblings, such as arsenic acid (2811.19.10.00) and hydrobromic acid (2811.19.30.00), is crucial. Those sibling codes are reserved for distinctly identified inorganic acids with their own specific chemical compositions. HTS 2811.19.61 serves as a residual classification for inorganic oxygen acids not otherwise specified, meaning it captures any such acid that hasn't been assigned to a more narrowly defined tariff line.

The subcategories within HTS 2811.19.61 provide a further level of detail for classification. Sulfamic acid, classified under 2811.19.61.10, is a specific example of an inorganic oxygen acid that warrants its own distinct subheading due to its unique properties and common commercial relevance. The residual subheading, 2811.19.61.90, then captures all other inorganic oxygen acids not specifically enumerated, ensuring comprehensive coverage within this classification.