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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If stabilizer addition renders suitable for specific end-use
Chapter 29 note (g) excludes additions making product specific-use rather than general chemical.
If oxidized to corresponding sulfonic acid
Saturated acyclic monocarboxylic acids with sulfur substituent classified by oxygen function.
If sodium salt form (thioglycolate)
Inorganic salts classified with parent organic acid per Chapter 29 note 3(C)(1).
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Import Tips & Compliance
• Document stabilizer type/concentration (<0.5% typical) per Chapter 29 note (f) to maintain pure compound status
• Include stability test data showing 12+ months shelf life under UN storage conditions
• Monitor for oxidation products; reject lots with >2% dithiodiglycolic acid
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.
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.
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.
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.