C.I. Fast Navy Base 2B from United States
C.I. Fast Navy Base 2B produces deep navy shades via coupling with naphthol AS-BS. The sulfonamide structure provides excellent coupling efficiency. As a chemically defined organic compound with a sulfonamide group, it falls under sulphonamides of heading 29.35.
Duty Rate — United States → Canada
0%
Import Tips
• Ensure the product is not put up as a dye preparation, which would shift to heading 32.04
• Verify the chemical structure for classification
• Check if the product is subject to Canadian chemical regulations