Sodium Silicate and Potassium Silicate Mold Additive from Japan
Liquid mixture of sodium silicate and potassium silicate used as an inorganic binder additive in sand molds for improved green strength and surface finish in metal casting operations. Classified under HTS 3824.99.39.90 for other mixtures of inorganic compounds used in foundry processes. The dual silicate formulation enhances mold stability at high temperatures.
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
• Require manufacturer's analysis certificate showing >95% inorganic silicate content; check pH stability specifications for foundry use; avoid packaging that suggests retail sale to prevent consumer product reclassification