2904.10.10.00/3,5-Naphthalenedisulfonic Acid/Japan

3,5-Naphthalenedisulfonic Acid from Japan

While not explicitly named, 3,5-naphthalenedisulfonic acid falls under HTS 2904.10.10.00 as a naphthalene derivative containing only sulfo groups, consistent with the heading's scope for disulfonic acids. Used in dye coupling and surfactant production.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Position isomer documentation critical; 1,5 vs 3,5 affects reactivity but same tariff

• pH adjustment documentation needed for acid vs salt forms during customs valuation

• Avoid bulk packaging over 25kg drums to prevent corrosion classification issues