Kaolin Clay Powder
Finely ground kaolin clay, also known as china clay, used primarily in ceramics, paper production, and as a filler in paints. Classified under HTS 2508.40.01 as 'other clays' since it is a natural clay not specified elsewhere in heading 2508 and excluding expanded clays of heading 6806.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If unprocessed or crude kaolin
Crude or unrefined kaolin falls under heading 2507 for kaolin and other kaolinic clays, while processed powder moves to 2508 as other clays.
If containing 70%+ combined iron as Fe2O3
Per chapter notes, earth colors with high iron content are excluded from Chapter 25 and classified in heading 2821 or 2530.
If expanded or puffed for lightweight aggregate
Expanded clays are specifically excluded from heading 2508 by statistical notes and classified under 6806.20.
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Import Tips & Compliance
• Verify clay purity and mineral composition via lab testing to confirm classification as 'other clays' and avoid reclassification to kaolin-specific subheadings
• Include geological origin certificates and particle size analysis in documentation to meet CBP requirements for natural mineral imports
• Watch for common pitfalls like contamination with iron oxides, which could shift classification to earth colors under heading 2530
Related Products under HTS 2508.40.01
Fire Clay Powder
Refractory-grade fire clay ground into powder for brick manufacturing and high-temperature applications. Classified in HTS 2508.40.01 as other clays, provided not calcined into mullite or chamotte.
Earthenware Clay Mix
Blended natural clays for low-fire earthenware pottery. Remains under HTS 2508.40.01 as other clays if not agglomerated or calcined.
Bentonite Clay Lumps
Natural bentonite clay in lump form, valued for its swelling properties in drilling muds, cat litter, and sealants. Falls under HTS 2508.40.01 as 'other clays,' encompassing natural bentonite not expanded or processed into articles.
Ball Clay for Ceramics
High-plasticity ball clay mined for use in fine porcelain and sanitaryware production. HTS 2508.40.01 covers this as 'other clays'—natural, unexpanded clays used in traditional ceramics.
Sepiolite Clay Absorbent
Natural sepiolite clay in absorbent form for cat litter and industrial spills, not expanded. HTS 2508.40.01 includes this fibrous clay as 'other clays' distinct from meerschaum.
Attapulgite Clay Granules
Granular attapulgite clay used in suspension agents for pesticides and drilling fluids. As a natural, non-expanded clay, it fits HTS 2508.40.01 'other clays.'