Potassium Ferrate Concrete Waterproofer from Japan
A specialized inorganic salt preparation of potassium ferrate used to waterproof and strengthen concrete by reacting with water to form insoluble complexes. Falls under HTS 3824.40.20.00 as it consists wholly of inorganic ferrate compounds prepared for concrete applications. Provides permanent internal waterproofing.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Handle as oxidizer with proper hazmat documentation; verify ferrate purity certificate; ensure not misclassified as fertilizer under Chapter 31