Chemical-Grade Flux Limestone from Canada
Ultra-pure limestone flux for chemical processes requiring consistent calcium source, such as precipitated calcium carbonate production. HTS 2521.00.00.00 applies to its role in lime-based chemical manufacturing. Low silica ensures purity in end products.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Chemical analysis certificates critical for ultra-low impurity claims
• Specify chemical end-use in commercial invoices
• Powdered forms risk 2517 if not documented as flux