2508Clays, andalusite, kyanite and sillimanite
HTS Code 2508 covers any article best defined as Mineral ProductsSalt; sulfur; earths and stone; plastering materials, lime and cementOther clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths: in the Harmonized Tariff Schedule — covering 6 sub-classifications.
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Relevant HTS Notes
Official USITC notes that may affect classification under HTS 2508.
Search CROSS Rulings for HTS 2508
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What does HTS code 2508 cover?
HTS code 2508 covers clays, andalusite, kyanite and sillimanite (Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths:), classified under Chapter 25 (Salt; sulfur; earths and stone; plastering materials, lime and cement) in the US Harmonized Tariff Schedule. There are 6 more specific sub-classifications under this code.
Primary Sources
The official documents behind the rates and tariffs on this page. Duties are worked out from them; check the legal text before you file.