Bentonite Clay Swellable Grade from Mexico
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.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Certify montmorillonite content (>70%) and cation exchange capacity for proper 'other clays' declaration
• Declare intended end-use (e.g
• drilling) but note classification is material-based, not use-based