2931.90.90.25/Tetrabutyltin for Polymerization Catalysis/Mexico

Tetrabutyltin for Polymerization Catalysis from Mexico

Technical grade Tetrabutyltin specifically for olefin polymerization catalysis, classified HTS 2931.90.90.25. Meets Chapter 29 criteria for organo-inorganic tin compounds despite end-use labeling.

Duty Rate — Mexico → United States

13.7%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

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Import Tips

• End-use statements don't change chemical classification; remains 2931

• Provide import documentation separating from PVC stabilizer uses

• Monitor REACH Annex XVII restrictions on organotin supply chain