1,5-Naphthalenedisulfonic Acid from Canada
1,5-Naphthalenedisulfonic acid is a di-sulfonated naphthalene derivative explicitly provided for in HTS 2904.10.10.00 as a sulfonated hydrocarbon with only sulfo groups. It is widely used in the production of azo dyes and optical brighteners.
Duty Rate — Canada → United States
15.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include NMR or HPLC purity certificates; impurities may affect classification purity requirements
• Label as UN 3265 corrosive liquid for proper hazmat shipping compliance
• Check REACH compliance for EU transshipments involving this dye intermediate