Zinc Phosphite from Mexico
Zinc phosphite (ZnHPO3) functions as a corrosion inhibitor and flame retardant in coatings. It is a phosphonate under HTS 2835.10.00.00 as a zinc salt meeting inorganic base criteria. The white powder disperses well in polymer matrices.
Duty Rate — Mexico → United States
13.1%
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
• TSCA registration needed; specify particle size in specs; test for soluble zinc limits