Photochromic Dye Intermediate Indoline from Japan
1,3,3-Trimethyl-2-methyleneindoline is a photochromic dye intermediate that reacts with spiropyrans to create color-changing materials for lenses and other applications. As a nitrogen heterocycle, it is classified under tariff item 2933.99.00.
Duty Rate — Japan → Canada
0%
Import Tips
• Ensure the product is not put up in measured doses or for retail sale, which would shift classification to another heading
• If the product is dissolved in a solvent, confirm the solvent is for safety or transport only and does not make it suitable for a specific use
• Maintain technical documentation to support the chemical identity