8-Amino-1-naphthol-5-sulfonic acid (Schaeffer's acid) from United States
8-Amino-1-naphthol-5-sulfonic acid (Schaeffer's acid) is an aminohydroxynaphthalenesulphonic acid used as a dye intermediate for acid wool and reactive dyes. It is a separate chemically defined compound, classified under tariff item 2922.21.00.
Duty Rate — United States → Canada
0%
Import Tips
• Confirm the product is the free acid, not a salt, unless the salt is also covered
• Provide the CAS number and structural formula
• Verify if the product is subject to any Canadian trade remedies or quotas