Disodium 1,8-Dihydroxynaphthalene-3,6-disulfonate (H Salt) from Japan
The disodium salt form of 1,8-Dihydroxynaphthalene-3,6-disulfonic acid, commonly called H Salt, used in water-soluble dye coupling. HTS 2908.99.0900 explicitly includes this salt as a halogenated/sulfonated phenol derivative containing only sulfo groups.
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%
Import Tips
• Include salt content verification in COA; sodium content must match theoretical 14.8% for disodium form
• Label as UN 3265 Corrosive Liquid, basic, inorganic, n.o.s. for ocean transport