2-Mercaptobenzoic Acid
2-Mercaptobenzoic acid is used in dye synthesis and as a reagent in analytical chemistry. It falls under HTS 2930.90.49 as an aromatic organo-sulfur acid, consistent with heading 2930's scope for non-sulfonated S-C compounds.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If specifically a thiophenecarboxylic acid
Enumerated heterocyclic sulfur compounds have dedicated subheadings.
If used as synthetic organic luminophore
Functional use as coloring matter excludes from Chapter 29.
If aromatic carboxylic acid function primary
Last numerical order rule favors oxygen-function headings.
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Import Tips & Compliance
• Aromatic compounds require CAS registry verification matching 49-49-3
• Ensure no nitro groups present (would shift to 2922 per chapter notes)
Related Products under HTS 2930.90.49
Thioglycolic Acid
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.
3-Mercaptopropionic Acid
3-Mercaptopropionic acid serves as a cross-linking agent in polymer synthesis and corrosion inhibitor. It qualifies for HTS 2930.90.49 as an organo-sulfur carboxylic acid, meeting the direct sulfur-carbon linkage requirement of heading 2930.
Thiosalicylic Acid
Thiosalicylic acid (2-mercaptobenzoic acid) serves in pharmaceutical synthesis and rubber vulcanization. Classified in HTS 2930.90.49 as other organo-sulfur acids per direct S-C linkage requirement.
2-Mercaptopropionic Acid
2-Mercaptopropionic acid is an alpha-thiol carboxylic acid used in pharmaceutical intermediates and metal chelation applications. Classified under HTS 2930.90.49 as an other organo-sulfur acid with the characteristic S-C bond structure defined in heading 2930.
Mercaptosuccinic Acid
Mercaptosuccinic acid (thiomalic acid) functions as a chelating agent in metal recovery processes and biochemical research. HTS 2930.90.49 covers this as an other organo-sulfur acid per the chapter's definition of compounds with S directly bound to C.