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%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
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