Sodium Silicate Solution (Water Glass) from Canada
A viscous, aqueous solution of sodium silicate, commonly known as water glass, used in detergents, adhesives, and as a concrete sealant. It falls under HTS 2839.90.5000 as a commercial alkali metal silicate, specifically sodium silicate in its soluble form, distinct from solid or fused varieties.
Duty Rate — Canada → United States
13.1%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify concentration and purity via Certificate of Analysis to confirm classification as chemically defined alkali metal silicate
• Ensure proper hazardous material labeling if shipped as liquid; common pitfall is misdeclaring as soap or detergent base
• Obtain EPA approvals for industrial uses like wastewater treatment to avoid customs holds