3202.90.10.00/Sodium Metabisulfite Pickling Acidulant/China

Sodium Metabisulfite Pickling Acidulant from China

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 — China → United States

35%

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

9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)

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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