1,5-Naphthalenedisulfonic Acid from United States
1,5-Naphthalenedisulfonic acid is a di-sulfonated naphthalene derivative containing only sulpho groups, explicitly provided for in tariff item 2904.10.00. It is widely used in the production of azo dyes and as an intermediate in organic synthesis. The product is a separate chemically defined compound meeting Chapter 29 requirements.
Duty Rate — United States → Canada
0%
Import Tips
• Confirm the product is a single isomer and not a mixture, as mixtures may be classified differently
• Provide a certificate of analysis to verify the chemical structure for CBSA
• Check if the product is subject to any Canadian environmental regulations for sulfonic acids