Sodium Silicate Foundry Binder from Mexico
A liquid sodium silicate solution used as a binder in foundry sand molds and cores, providing high-temperature strength through silicate polymerization. It falls under HTS 3824.10.00.00 as a prepared binder specifically formulated for foundry mold production. Commonly used in iron and steel casting operations.
Duty Rate — Mexico → United States
16%
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
• Verify product meets EPA VOC emission standards for foundry binders to avoid customs delays
• Include technical data sheets proving intended use for foundry molds, not general adhesives
• Watch for misclassification as plain sodium silicate chemicals under 2839.11