Bentonite Clay Lumps from Mexico
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.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide swell index test results and CEC (cation exchange capacity) data to substantiate bentonite classification under other clays
• Ensure shipments are free of synthetic additives; pure natural clays only qualify here—mixtures may go to Chapter 38