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Benzenesulfonic acid, [(9,10-dihydro-9,10-dioxo-1,4-anthracenediyl)diimino]bis[(4-chlorophenoxy)-, sodium salt (1:2)

CAS 71720-84-8

EPA and Census publish no US supply data for this chemical.

Molecular structure of 71720-84-8
2 Na⁺
US productionNot reported
Top sourceNo public record

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

Where It Comes From

EPA and Census publish no US supply data for this chemical.

Why It Matters

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

Chemical Identity

CAS71720-84-8
PubChem CIDNot recorded
DTXSIDDTXSID10890151
FormulaC38H22Cl2N2Na2O10S2
Mol. Weight847.6 g/mol
SMILES[Na+].[Na+].[O-]S(=O)(=O)C1=C(NC2=CC=C(NC3=C(C=CC=C3OC3=CC=C(Cl)C=C3)S([O-])(=O)=O)C3=C2C(=O)C2=CC=CC=C2C3=O)C(OC2=CC=C(Cl)C=C2)=CC=C1

Data Sources

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Brief citations

Benzenesulfonic acid, [(9,10-dihydro-9,10-dioxo-1,4-anthracenediyl)diimino]bis[(4-chlorophenoxy)-, sodium salt (1:2) (CAS 71720-84-8) https://chemicalindependence.com/chemical/71720-84-8/ EPA TSCA Inventory: CAS 71720-84-8. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory