Sodium Perborate Tetrahydrate from Mexico
Sodium perborate tetrahydrate (NaBO3·4H2O), often called 'gem clips' in industry, is an anhydrous white crystalline powder that releases hydrogen peroxide in water for bleaching applications. Classified under HTS 2840.30.0010 as a peroxoborate of sodium per Chapter 28 notes for inorganic oxygen compounds.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide lab test results confirming tetrahydrate form and minimum assay (typically 99%+) to prevent misclassification as lower-grade mixtures
• Use UN 3378 packaging for oxidizing substances; label clearly to comply with DOT/IMDG regulations
• Avoid common error of importing in consumer-ready detergent packs, which changes classification—import bulk for further processing