Natural Sodium Bentonite Clay from Japan
A naturally occurring sodium-based bentonite clay mined from volcanic ash deposits, used primarily as a drilling mud additive in oil and gas exploration. It falls under HTS 2508.10.00.00 as unprocessed bentonite clay, distinct from expanded clays or other minerals excluded by chapter notes.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify mineral composition via lab testing to confirm bentonite content and avoid misclassification as earth colors under heading 2530
• Provide geological origin certificates and ensure no chemical modifications to qualify as raw clay under Chapter 25
• Check for radioactive contaminants common in natural clays; include assay reports to prevent customs holds