Aromatic Sulfonate Water Reducer for Mortar from Canada
Concentrated liquid water-reducing agent with sodium naphthalene sulfonate (>5% aromatic) for mortars and concretes, improving strength by minimizing water. HTS 3824.40.10.00 applies due to aromatic substance threshold in prepared additives. Commonly used in tile adhesives and masonry.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Include batch certificates proving sulfonate content; register as hazardous if flash point <60°C
• Differentiate from pure surfactants in documentation