Calcined Bentonite Clay from Germany
Bentonite subjected to controlled calcining to enhance adsorption properties for foundry sand bonding, still classifiable as clay under the heading allowing calcined forms. Excluded items like dolomite mixes (3816) do not apply to this pure mineral product.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Provide thermal processing certificates showing calcination temperature below fusion to confirm clay status
• Separate from additives; mixtures with resins could classify as Chapter 38 preparations
• Test for phase changes via XRD to rule out conversion to mullite (also in 2508 but different stats)