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Methylphosphonic Acid Aqueous Solution (50%) from Canada

A 50% aqueous solution of methylphosphonic acid qualifies under HTS 2931.44.00.00 per Chapter 29 note (d) for products of this heading dissolved in water. It is used in metal surface treatment and as a catalyst intermediate.

Duty Rate — Canada → United States

13.7%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada

Import Tips

Confirm solution concentration stays within 'normal' dilution for transport per note (d); provide stability data

Label clearly as corrosive to prevent delays at FDA or EPA ports

Methylphosphonic Acid Aqueous Solution (50%) from Canada — Import Duty Rate | HTS 2931.44.00.00