Boric Acid and Sodium Tetraborate Hardening Agent from Japan
Dry blend of boric acid and sodium tetraborate (borax) used as a chemical hardener for inorganic foundry binders to accelerate setting time and improve mold strength. Classified in HTS 3824.99.39.90 for multi-inorganic compound preparations. Essential for no-bake foundry systems requiring rapid mold production.
Duty Rate — Japan → United States
10%
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
Import Tips
• Include boron content analysis for DOT hazardous material shipping; verify compatibility with specific silicate binders; maintain dry storage conditions to prevent premature reaction