2-Naphthol-3,6-disulfonic acid disodium salt from Mexico
The disodium salt of 2-naphthol-3,6-disulfonic acid (R-acid salt), specifically provided for in HTS 2908.99.0300. This sulfonated naphthol derivative contains only sulfo groups and their salts, qualifying under the chapter's provisions for chemically defined organic compounds. Used in manufacturing acid dyes.
Duty Rate — Mexico → United States
15.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Specify 'disodium salt' and provide sodium analysis (typically 2 Na per molecule)
• Monitor for hydration state; dihydrate forms common and affect weight declarations
• Include downstream dye manufacturing end-use statement to support intermediate classification