Sodium Metabisulfite Pickling Acidulant from Mexico
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 — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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