2930.90.49/Thioglycolic Acid/Canada

Thioglycolic Acid from Canada

Thioglycolic acid (mercaptoacetic acid) is a colorless liquid organic sulfur compound used in hair perming solutions, metal cleaning, and polymer production. It falls under HTS 2930.90.49 as an organo-sulfur acid with sulfur directly linked to carbon, classified as 'other' acids not specifically enumerated elsewhere in heading 2930.

Duty Rate — Canada → United States

14.2%

Rate breakdown

9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter

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Import Tips

• Provide detailed chemical analysis certificates confirming sulfur-carbon bond structure to verify Chapter 29 classification over Chapter 28 inorganic acids

• Include Safety Data Sheets (SDS) and end-use declarations, as cosmetic vs industrial applications may trigger different regulatory scrutiny

• Avoid misclassification as a simple thiol by documenting acid functionality; common pitfall is shipment without proper UN hazard labeling