Potassium Waterglass Powder (Technical Grade) from Canada
Anhydrous potassium silicate powder derived from spray-dried liquid, used in foundry molds and refractory cements. Classified under HTS 2839.90.1000 as a commercial potassium silicate, meeting Chapter 28 definitions for inorganic compounds. Ideal for applications needing high-temperature binding.
Duty Rate — Canada → United States
13.1%
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
Import Tips
• Provide assay certificates showing >95% silicate content to distinguish from mixtures
• Dust hazard precautions required; label as irritant and ensure proper packaging for air/sea freight