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2918.29.04.00/5-Sulfosalicylic Acid/Canada

5-Sulfosalicylic Acid from Canada

5-Sulfosalicylic acid (5-hydroxy-2-sulfobenzoic acid) is listed in HTS 2918.29.04.00 despite sulfonation, as a specific exception for phenolic carboxylic acids. Widely used for protein precipitation and iron testing in labs.

Duty Rate — Canada → United States

15.8%

Rate breakdown

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

• Declare sulfonic acid position and content; ensure solution not for specific use per note (e); common pitfall is classifying as general sulfonated in 2918.19

5-Sulfosalicylic Acid from Canada — Import Duty Rate | HTS 2918.29.04.00