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Benzenesulfonic acid, 4-(phenylamino)-

CAS 101-57-5

Molecular structure of 101-57-5
US productionNot reported
Import value, 2024$9M
Top sourceCanada 35%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

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 292144 · basket

These shares come from HS customs code 292144, which covers 11 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CA 35%CanadaIN 30%IndiaCN 21%ChinaIT 9%ItalySK 4%Slovakia

Why It Matters

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

Chemical Identity

CAS101-57-5
PubChem CIDNot recorded
DTXSIDDTXSID1059234
FormulaC12H11NO3S
Mol. Weight249.28 g/mol
SMILESOS(=O)(=O)C1=CC=C(NC2=CC=CC=C2)C=C1

Data Sources

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Brief citations

Benzenesulfonic acid, 4-(phenylamino)- (CAS 101-57-5) https://chemicalindependence.com/chemical/101-57-5/ EPA TSCA Inventory: CAS 101-57-5. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 292144 for CAS 101-57-5. Reporting year: 2024. https://usatrade.census.gov/