K Acid (1-Naphthylamine-8-sulfonic Acid) from United States
K Acid (1-Naphthylamine-8-sulfonic Acid) acts as a dye intermediate with amino and sulfonic groups on a naphthalene structure. It meets the definition of an oxygen-function amino-compound under Chapter 29 notes, placing it under tariff item 2922.21.00. The compound is a separate chemically defined organic compound per Chapter 29 Note 1(a).
Duty Rate — United States → Canada
0%
Import Tips
• Verify that the product is not put up in measured doses or for retail sale, as per Section VI Note 2
• Provide a certificate of analysis to confirm the chemical identity and purity
• Be prepared to explain the end-use to customs if asked, as dye intermediates may be subject to verification