NPP Stabilized with Antioxidant from United States
N-Phenethyl-4-piperidone (NPP) with added BHT stabilizer to prevent oxidation during storage and transport. The stabilizer is permitted under Chapter 29 Note 1(f) as necessary for preservation, and the product remains a separate chemically defined compound, classifiable under tariff item 2933.37.00.
Duty Rate — United States → Canada
0%
Import Tips
• Document the stabilizer's purpose and quantity to justify classification under 2933.37.00
• Ensure the stabilizer does not exceed levels that would affect the product's character
• Keep records of the stabilizer's necessity for transport or storage