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HTS code reference›Chapter 25: Salt, sulfur, earth and stone; plaster, lime and cement›2508

HTS Code 2508

Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths:

Official tariff path

Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths:

Level: headingGeneral duty: Varies / see child provision

What does HTS 2508 cover?

This provision appears in the 2026 Harmonized Tariff Schedule of the United States under the following legal tariff hierarchy. A product must match the wording and applicable section or chapter notes before this code is used on an entry.

  1. 1Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths:

More specific provisions

2508.10.00.00Bentonite2508.30.00.00Fire-clay2508.40.01Other clays2508.50.00.00Andalusite, kyanite and sillimanite2508.60.00.00Mullite2508.70.00.00Chamotte or dinas earth
Official source and limitations

Based on USITC HTS 2026 Revision 12, published July 21, 2026. The general rate does not include every origin-specific program, Section 301 or 232 measure, antidumping or countervailing duty, quota, or other agency requirement.

Open this code in the official USITC search ↗