3506.10.10.00 - Animal glue, including casein glue, but not including fish glue

This HTS category, 3506.10.10.00, specifically enumerates animal glues and casein glues that are prepared and suitable for retail sale in packages not exceeding 1 kilogram. This includes adhesives derived from animal byproducts, such as hides, bones, and collagen, as well as glues made from casein, a protein found in milk. It is crucial to note that fish glue, despite being an animal-derived adhesive, is explicitly excluded from this classification. The primary characteristic of products within this subcategory is their presentation for direct consumer use in relatively small quantities.

The distinction between this category and its sibling, 3506.10.50.00 (Other), lies in the specific nature of the adhesive. While 3506.10.10.00 is dedicated to animal and casein glues, the "Other" category would encompass any other prepared glues or adhesives meeting the retail sale and weight criteria that are not animal or casein-based. This might include synthetic glues or other specialized adhesive formulations packaged for small-scale consumer purchase.

As this is a leaf node in the HTS classification, there are no further subcategories. Therefore, classification into 3506.10.10.00 hinges directly on whether the product is an animal glue or casein glue, presented in packaging not exceeding 1 kg, and is intended for retail sale, while simultaneously confirming it is not fish glue. Examples might include small tubes or bottles of animal-based craft glue or casein-based woodworking adhesives sold in hardware stores.