Potassium Hydroquinone Disulfonate from United States
Potassium hydroquinone disulfonate, an inorganic salt of hydroquinone, used in photographic processing. Per Chapter 29 Note 5(C), salts of organic compounds are classified with the organic compound, so it falls under tariff item 2907.22.00 as a salt of hydroquinone.
Duty Rate — United States → Canada
0%
Import Tips
• Provide the chemical formula and salt formation details to confirm classification
• Ensure the salt is not more specifically covered by another heading (e.g
• organo-sulfur compounds)
• Document the photographic use to support the tariff item