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
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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