Industrial Grade Thioglycolic Acid
Technical grade thioglycolic acid used in polymer synthesis and metal extraction, specifically classified under HTS 2930.90.4910. Meets Chapter 29 requirements as a separate chemically defined organo-sulfur acid with direct C-S bond.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as other organo-sulfur compounds without acid function
Heading 2930 structure prioritizes latest numerical order, but non-acidic sulfur compounds go to 2930.90.91.
If put up as herbicide or plant growth regulator
Pesticide preparations containing thioglycolic acid derivatives classified in Chapter 38.
If esterified form imported separately
Esters classified with parent acid per Chapter 29 note 3(A), but simple alkyl thioglycolates may go to alcohols.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Include assay certificate showing ≥80% purity to distinguish from mixtures in 3824
• Label as UN 1940 Corrosive Liquid, pH <2; ensure DOT-compliant packaging
• Document end-use to prevent reclassification as hair waving preparation under 3305
Related Products under HTS 2930.90.49.10
Thioglycolic Acid 99% Pure
Thioglycolic acid (mercaptoacetic acid), a chemically defined organic compound with the formula HSCH₂COOH, classified under HTS 2930.90.4910 as an organo-sulfur acid. It features a sulfur atom directly linked to carbon, fitting Chapter 29 note for separate chemically defined compounds.
Pharmaceutical Grade Thioglycolic Acid USP
Ultra-pure thioglycolic acid meeting USP standards for pharmaceutical intermediates, classified under HTS 2930.90.4910. Qualifies as chemically defined organo-sulfur acid per Chapter 29 scope.
Thioglycolic Acid with Stabilizer
Thioglycolic acid containing added stabilizer for transport stability, explicitly allowed under Chapter 29 note (f). Remains classified as pure compound under HTS 2930.90.4910, not as mixture.
Distilled Thioglycolic Acid
Vacuum-distilled thioglycolic acid with minimized impurities, certified for electronics-grade applications. Classified under HTS 2930.90.4910 as chemically defined organo-sulfur acid.