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Potassium Hydroquinone Disulfonate from Japan

Potassium hydroquinone disulfonate, an inorganic salt of hydroquinone per Chapter 29 Note 5(C), is classified under HTS 2907.22.5000 'other.' Used in photographic processing as a stable developer component resistant to aerial oxidation.

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

Classify as hydroquinone salt per Chapter Note 5(C)(1); provide salt formation chemistry and counterion analysis

Declare water solubility and photographic end-use to distinguish from general chemical hydroquinone

Include batch assay confirming sulfonate substitution pattern matching hydroquinone parent structure