N-Oxydiethylenebenzothiazole-2-Sulfenamide (NOBS/MBS) from China
NOBS provides delayed vulcanization with rapid curing rates, ideal for thick rubber articles like tires. This sulfenamide's principal rubber processing function places it under HTS 2930.90.92.31 as a chemically defined organo-sulfur compound.
Duty Rate — China → United States
3.7%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Specify 'sulfenamide accelerator' on commercial invoice with CAS 102-77-2
• Purity >96% required for this classification; lower grades become mixtures
• Shelf life declaration important as these decompose over time