Sodium Metabisulfite Pickling Acidulant from Canada
Sodium metabisulfite generates sulfurous acid in situ for leather pickling operations, qualifying as wholly inorganic under HTS 3202.90.10.00. Essential for preparing hides before chrome tanning while acting as antioxidant. Prevents bacterial growth during wet processing.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Provide generation rate documentation showing SO2 yield for tanning verification
• Comply with fumigant gas regulations due to sulfur dioxide evolution potential
• Distinguish from wine preservative grade with leather-specific purity certificate