Silicon Dioxide (Amorphous Silica) from Mexico
Amorphous silicon dioxide, also known as synthetic silica, is a chemically defined inorganic oxygen compound of the nonmetal silicon. It falls under HTS 2811.29.5000 as 'other inorganic oxygen compounds of nonmetals' excluding specified compounds like carbon oxides. Used as a filler in rubber, plastics, and pharmaceuticals.
Duty Rate — Mexico → United States
13.7%
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
• Provide Certificate of Analysis (COA) confirming purity and amorphous structure to avoid misclassification as quartz
• Ensure proper labeling as non-hazardous if particle size exceeds respirable limits; comply with TSCA registration
• Verify bulk packaging doesn't trigger 3824 classification for mixtures