N-(Oxydiethylene)benzothiazole-2-sulfenamide (NOBS) Crystals from United States
NOBS is a delayed-action sulfenamide accelerator used in rubber vulcanization. Its structure contains the benzothiazole ring system, which qualifies it for this tariff item. It provides scorch safety and fast curing in rubber compounds.
Duty Rate — United States → Canada
0%
Import Tips
• Ensure the product is clearly identified as a chemically defined compound
• Keep technical documentation showing the benzothiazole ring structure
• Verify the purity and any added stabilizers are permitted under Chapter 29 notes