2811.19 - Other:

This category, HTS Code 2811.19, encompasses inorganic acids not specifically enumerated elsewhere within the "Other inorganic acids" heading. It serves as a residual classification for inorganic acids that do not fall under the more specific subheadings for hydrogen fluoride (hydrofluoric acid) or hydrogen cyanide (hydrocyanic acid). The defining characteristic for inclusion in this classification is its nature as an inorganic acid.

Unlike its siblings, hydrogen fluoride and hydrogen cyanide, this category does not cover the highly reactive and distinct properties of those specific compounds. Instead, it captures a broader range of inorganic acidic substances. For example, while hydrogen fluoride is primarily known for its etching capabilities and toxicity, the substances within 2811.19 will have varying chemical compositions and applications.

The subcategories under 2811.19 further refine the classification by specific chemical identity. Arsenic acid and hydrobromic acid are distinct examples of inorganic acids that are classified separately within this broader heading. The "Other" subheading (2811.19.61) is a catch-all for any remaining inorganic acids that do not meet the criteria for the more specific sub-subheadings, ensuring comprehensive coverage of this chemical group.