Sodium Fluorosilicate and Calcium Hydroxide Catalyst from Mexico
Specialty catalyst mixture of sodium fluorosilicate and calcium hydroxide for gassing reactions in foundry core production using CO2-hardened silicate binders. HTS 3824.99.39.90 classification for inorganic foundry process chemicals. Enables rapid core formation with excellent dimensional stability.
Duty Rate — Mexico → United States
10%
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
• Prepare fluoride exposure risk assessments for SDS; ensure precise stoichiometric ratios certification; comply with TSCA inventory requirements for fluorosilicates