</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Santocure TBBS Accelerator from China

"Santocure TBBS" is a branded form of N-tert-Butyl-2-benzothiazolesulfenamide, a sulfenamide accelerator with the defining benzothiazole ring-system of HTS 2934.20.0500. Widely used in NR and synthetic rubber for optimal scorch safety in tire manufacturing.

Duty Rate — China → United States

19%

Rate breakdown

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China

Import Tips

Retain brand-specific technical data sheets showing TBBS composition to support classification during verification audits

For bulk imports (>25kg drums), ensure DOT/UN packaging certification; avoid plastic bags that risk dust contamination

Watch for origin marking requirements - chemical name must appear on drums alongside country of manufacture

Santocure TBBS Accelerator from China — Import Duty Rate | HTS 2934.20.05.00