N-Cyclohexyl-2-benzothiazolesulfenamide (CBS)
CBS is a delayed-action vulcanization accelerator containing the benzothiazole ring-system, widely used in tire and rubber manufacturing. Classified under HTS 2934.20.4000 per additional U.S. note 3, as it's a specific heterocyclic compound listed for tariff purposes.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified primarily by organo-sulfur function
Organo-sulfur compounds take precedence over heterocyclic classification per Chapter 29 note on heading order.
If supplied as rubber processing additive preparation
Prepared rubber accelerators exceeding certain purity thresholds move to Chapter 38 mixtures.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide technical data sheet confirming benzothiazole content and CAS number for customs verification
• Ensure packaging complies with UN regulations for chemical transport (often UN 3077)
• Monitor Section VI note 3 quantities if applicable to avoid over-quota duties
Related Products under HTS 2934.20.40.00
2-Mercaptobenzothiazole
2-Mercaptobenzothiazole is a benzothiazole derivative used primarily as a vulcanization accelerator in rubber production. It falls under HTS 2934.20.4000 as a compound containing a benzothiazole ring-system and is specifically listed in additional U.S. note 3 to section VI for chemical compounds subject to special tariff treatment.
Zinc 2-Mercaptobenzothiazole
This zinc salt of 2-mercaptobenzothiazole serves as a rubber accelerator and corrosion inhibitor with the characteristic benzothiazole ring. It qualifies for HTS 2934.20.4000 under additional U.S. note 3 to section VI and Chapter 29 salt classification rules.
2-(Morpholinothio)benzothiazole (MBS)
MBS is a sulfenamide-type benzothiazole accelerator providing scorch safety in rubber compounding, particularly for automotive applications. Falls under HTS 2934.20.4000 as specified in additional U.S. note 3 for pure heterocyclic compounds.
Benzothiazole-2-thiol
Also known as 2-benzothiazolethiol, this compound is a key intermediate and accelerator containing the unfused benzothiazole ring-system. HTS 2934.20.4000 applies per additional U.S. note 3 to section VI for these specifically described products.
N-tert-Butyl-2-benzothiazolesulfenamide (TBBS)
TBBS is a fast-curing rubber accelerator with benzothiazole structure, ideal for tire treads and mechanical goods. Classified in HTS 2934.20.4000 under additional U.S. note 3 for pure benzothiazole compounds.