Kaolin Clay Powder
Finely ground kaolin clay, also known as china clay, used primarily in ceramics, paper manufacturing, and as a filler in paints. Classified under HTS 2508.40.0150 as 'other clays' (excluding expanded clays), in crude or powdered form, not further processed beyond grinding. It meets the chapter definition for natural clays suitable for industrial applications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing 70%+ combined iron as Fe2O3
Earth colors with high iron content are excluded from Chapter 25 clays and classified under heading 2821 per chapter notes.
If expanded or puffed for lightweight aggregate
Expanded clays are specifically excluded from heading 2508 and covered under heading 6806.
If fire-clay, chamotte or dinas earths
Clays specifically for high-temperature refractory use fall under the subheading for chamotte or dinas earths.
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Import Tips & Compliance
• Verify purity and mineral composition via lab testing to confirm classification as kaolin clay under 'other clays', avoiding misclassification as ball clay
• Provide geological origin certificates if required for low-duty programs; ensure packaging prevents moisture absorption during transit
Related Products under HTS 2508.40.01.50
Sepiolite Meerschaum Ore
Natural sepiolite clay mineral, known as meerschaum ore, used for pipes and absorbents. Falls under HTS 2508.40.0150 as other clays, explicitly covered in heading 2530 note but prioritized here if not polished.
Ball Clay for Ceramics
Plastic ball clay mined and processed for pottery and tile production, valued for its fine grain and binding properties. Falls under HTS 2508.40.0150 as 'other clays' not elsewhere specified, including uncalcined kaolinitic clays for industrial use.
Bentonite Clay Swellable Grade
Sodium montmorillonite bentonite clay with high swelling capacity, used in drilling muds and sealants. HTS 2508.40.0150 covers this as 'other clays', unexpanded and suitable for industrial applications like oilfield services.
Fuller's Earth Attapulgite
Absorbent attapulgite fuller's earth used for oil refining and cat litter bases. Classified in HTS 2508.40.0150 as other clays, representing natural mineral absorbents not calcined or expanded.
Common Brick Clay Raw
Unprocessed loamy clay suitable for manufacturing common bricks and tiles. HTS 2508.40.0150 includes such 'other clays' in natural state, not prepared for immediate refractory use.
Calcined Kaolin Metakaolin
Partially calcined kaolin producing metakaolin for high-performance concrete Pozzolanic reaction. HTS 2508.40.0150 includes calcined 'other clays' unless specifically chamotte; metakaolin qualifies as processed clay.