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3824.99.39.90/Potassium Fluozirconate and Sodium Silicate Additive/Mexico

Potassium Fluozirconate and Sodium Silicate Additive from Mexico

Complex inorganic mixture of potassium fluozirconate and sodium silicate for anti-veining additives in iron foundry molds. Classified HTS 3824.99.39.90 for specialized foundry process chemicals. Prevents sand expansion defects in heavy section castings.

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

• Demonstrate veining reduction test results from foundry trials; ensure fluozirconate purity certification; segregate from moisture to prevent premature zircon precipitation

Potassium Fluozirconate and Sodium Silicate Additive from Mexico — Import Duty Rate | HTS 3824.99.39.90