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3,4-Dihydroxybenzoic acid

CAS 99-50-3

Molecular structure of 99-50-3
US productionNot reported
Import value, 2024$122M
Top sourceSouth Korea 39%

This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 291829 · basket

These shares come from HS customs code 291829, which covers 85 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
KR 39%South KoreaCN 26%ChinaTW 11%TaiwanJP 9%JapanSG 5%Singapore

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Chemical Identity

CAS99-50-3
PubChem CIDNot recorded
DTXSIDDTXSID4021212
FormulaC7H6O4
Mol. Weight154.121 g/mol
SMILESOC(=O)C1=CC(O)=C(O)C=C1

Data Sources

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Brief citations

3,4-Dihydroxybenzoic acid (CAS 99-50-3) https://chemicalindependence.com/chemical/99-50-3/ EPA CompTox (DSSTox): 99-50-3. Retrieved 2026-04-29. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4021212 US Census international trade: HS 291829 for CAS 99-50-3. Reporting year: 2024. https://usatrade.census.gov/