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1,3-Benzenedicarboxylic acid, 5-sulfo-

CAS 22326-31-4

U.S. production volumes are classified as confidential business information.

Molecular structure of 22326-31-4
US productionCBI
Import value, 2024$316M
Top sourceSouth Korea 19%

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 291739 · basket

EPA reports by year
2023
US production Confidential · Imports Confidential

These shares come from HS customs code 291739, which covers 103 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
KR 19%South KoreaCN 19%ChinaIN 18%IndiaES 13%SpainCA 9%Canada
Domestic parents -- activity not disclosed (1)
Futurefuel

Why It Matters

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

Chemical Identity

CAS22326-31-4
PubChem CIDNot recorded
DTXSIDDTXSID8045064
FormulaC8H6O7S
Mol. Weight246.19 g/mol
SMILESOC(=O)C1=CC(=CC(=C1)C(O)=O)S(O)(=O)=O

Data Sources

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Brief citations

1,3-Benzenedicarboxylic acid, 5-sulfo- (CAS 22326-31-4) https://chemicalindependence.com/chemical/22326-31-4/ EPA TSCA Inventory: CAS 22326-31-4. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 22326-31-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291739 for CAS 22326-31-4. Reporting year: 2024. https://usatrade.census.gov/