2930.90.49/Thioglycolic Acid/Japan

Thioglycolic Acid from Japan

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 — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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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