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2811.22.50.00/Colloidal Silica Dispersion (50% Solids)/Mexico

Colloidal Silica Dispersion (50% Solids) from Mexico

Colloidal silica is a stable suspension of amorphous silicon dioxide nanoparticles in water or solvent, used for chemical mechanical polishing in semiconductors. It qualifies under HTS 2811.22.5000 as silicon dioxide in a chemically defined colloidal form.

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

• Specify 'aqueous dispersion of silicon dioxide' on invoices; concentration >30% solids keeps it as the compound, not a mixture

• Include stability and pH data to prove it's a true colloidal solution under Chapter 28 definitions

Colloidal Silica Dispersion (50% Solids) from Mexico — Import Duty Rate | HTS 2811.22.50.00