Chlorosulfuric Acid Anhydride for Polymer Processing from Canada
Anhydrous chlorosulfuric acid used to chlorosulfonate polymers like polyethylene for ion-exchange resins and membranes. Classified in HTS 2806.20.00.00 as the pure inorganic acid essential for surface modification reactions. Bulk liquid for chemical engineering applications.
Duty Rate — Canada → United States
14.2%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Specify anhydrous grade (<0.1% water) in documentation to maintain classification; use nitrogen blanketing during import storage; verify compatibility with polymer processing equipment materials