Bentonite (Including Calcined)

Bentonite's exceptional swelling and sealing properties make it indispensable across drilling fluids, foundry sands, cat litter, civil engineering (landfill liners, tunneling), and wine clarification, with sodium and calcium bentonite grades serving distinct markets. All forms — raw or calcined — classify under a single US tariff line (2508100000), so grade and processing state do not create separate classification branches. Mexico is the leading US import source, followed by China and Canada, with Egypt and France also supplying the market. Buyers sourcing from China should note potential Section 301 tariff exposure on this commodity.