2524.90.00.10 - Amosite

This HTS classification covers amosite asbestos, a specific type of amphibole asbestos characterized by its fibrous nature and brownish color. Amosite is primarily composed of magnesium iron silicate and is recognized for its excellent heat and chemical resistance properties, making it historically valuable in insulation and fireproofing applications. Within Chapter 25, which deals with salt, sulfur, earths, and stone, this code specifically isolates amosite from other forms of asbestos for detailed tariff purposes.

Amosite is distinguished from its sibling category, Chrysotile (2524.10.00.00), which refers to serpentine asbestos, the most common form of asbestos, typically white and characterized by its curly fibers. While both are types of asbestos, their distinct mineral compositions and physical properties necessitate separate classifications. It also differs from the general "Other" asbestos category (2524.90.00.60), which serves as a residual classification for any asbestos not specifically enumerated elsewhere in this heading.

As a leaf node within the HTS structure, this classification for amosite does not have further subcategories. Therefore, the focus remains on accurately identifying amosite asbestos based on its inherent properties and ensuring it is not misclassified under other asbestos types or the more general residual category. Importers and exporters should be aware that the use and importation of amosite asbestos are subject to stringent regulations and prohibitions in many jurisdictions due to health hazards.