PQ Sodium Silicate Solution (Metasilicate Grade) from Mexico
PQ Sodium Silicate is a liquid metasilicate solution (Na2O·xSiO2) produced commercially as a key sodium silicate under HTS 2839.11.00.00. It functions as a corrosion inhibitor in cooling systems and a binder in adhesives.
Duty Rate — Mexico → United States
11.1%
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
• Declare exact SiO2/Na2O ratio on commercial invoice to distinguish metasilicate from other silicates
• Use UN-approved drums for liquid transport due to alkaline corrosive nature
• Obtain prior notice via ACE for bulk chemical imports exceeding thresholds