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2508.60.00.00/Micronized Mullite Flour/Canada

Micronized Mullite Flour from Canada

Micronized mullite flour (D50 <5μm) serves as a fine filler in technical ceramics and casting slips. Remains under HTS 2508.60.00.00 as processed mullite powder, not chemical preparations.

Duty Rate — Canada → United States

10%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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Import Tips

• Submit particle size distribution (laser diffraction) confirming flour specification

• Ensure no organic additives; pure mullite maintains mineral classification