Gamma Acid (1,8-Dihydroxynaphthalene-3,6-disulfonic acid isomer) from United States
Gamma Acid, a positional isomer of H Acid also classified as 1,8-dihydroxynaphthalene-3,6-disulfonic acid, is used interchangeably in reactive dye manufacturing. It is a separate chemically defined organic compound with two hydroxy groups and two sulfo groups. It falls under tariff item 2908.99.00 as a sulphonated derivative of phenols or phenol-alcohols.
Duty Rate — United States → Canada
0%
Import Tips
• Provide the CAS number and purity analysis on the import documents
• Confirm that the product is not put up in a form for retail sale
• Check the CBSA's tariff classification advice for similar compounds to ensure consistency