Precipitated Silica Powder from China
Precipitated silica is a form of synthetic amorphous silicon dioxide produced by precipitation from a solution containing silicate salts. It falls under HTS 2811.22.5000 as 'other' silicon dioxide, distinct from natural diatomaceous earth or fused quartz, used primarily as a reinforcing filler in rubber and tire manufacturing.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Verify purity and amorphous structure via lab analysis to confirm classification as synthetic silicon dioxide under 2811, not mineral products
• Include Certificate of Analysis (COA) showing SiO2 content >99% and production method to prevent reclassification as commodity chemicals