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3824.99.39.90/Sodium Fluorosilicate and Calcium Hydroxide Catalyst/Mexico

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%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Prepare fluoride exposure risk assessments for SDS; ensure precise stoichiometric ratios certification; comply with TSCA inventory requirements for fluorosilicates

Sodium Fluorosilicate and Calcium Hydroxide Catalyst from Mexico — Import Duty Rate | HTS 3824.99.39.90