0506.90.00.40 - Other

This HTS subheading, 0506.90.00.40, encompasses products derived from bones and horn-cores that do not fit into more specific categories within heading 0506. This includes materials that have undergone basic processing such as defatting, simple preparation that does not alter their fundamental shape, or treatment with acid or degelatinization. It also covers any resulting powders and waste from these processed bones and horn-cores.

Distinguishing this category from its sibling, 0506.90.00.20 (Bones, crude, steamed or ground), is crucial. While both fall under "Other" preparations within heading 0506, this subheading specifically excludes crude, steamed, or ground bones. Therefore, 0506.90.00.40 is for products that have undergone more advanced or different preparation methods beyond simple grinding or steaming, or are waste materials generated from such processed items.

As a leaf node within the HTS structure, there are no further subcategories under 0506.90.00.40. Classification into this category relies on ensuring the material originates from bones or horn-cores and has been processed beyond the scope of specific provisions, such as crude, steamed, or ground forms, while still falling under the general preparations listed in heading 0506.