Dye Coupler H Salt Monosodium 1-Amino-8-OH-4,6-NDS from Canada
Industrial dye coupler known as H Salt, the monosodium salt of 1-amino-8-hydroxy-4,6-naphthalenedisulfonic acid. Precisely HTS 2922.21.2500 as a separate chemically defined oxygen-function amino-naphtholsulfonic salt. Essential for producing direct and reactive dyes in textile industry.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Provide coupling reaction data if questioned on end-use; ensure no added odoriferous substances beyond note (g) limits
• Common issue: bulk vs packaged for transport affecting duty