Bone black is specifically produced by the destructive distillation of animal bones, yielding a carbon-calcium phosphate composite used primarily in sugar refining and pigment applications. Animal black under 3802905000 covers other carbonized animal materials (such as blood or hide char) not meeting the bone black specification, as well as spent (exhausted) animal black from prior use. The distinction matters for classification and for end-use documentation in food-contact applications.

When activated clays or earths are intended for direct contact with food (e.g., as processing aids in edible oil bleaching), FDA may have jurisdiction over their use under food additive or GRAS frameworks. While the import entry itself is a customs matter, buyers should confirm that the specific product and its intended use comply with applicable FDA food-contact regulations. Consult a licensed customs broker or regulatory counsel for admissibility guidance.