Acid Red 289

CAS 12220-28-9

Xanthylium, 3-[(2,6-dimethylphenyl)amino]-6-[(2,6-dimethylsulfophenyl)amino]-9-(2-sulfophenyl)-, inner salt, sodium salt (1:1)

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

Molecular structure of 12220-28-9
1 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

CAS12220-28-9
PubChem CIDNot recorded
DTXSIDDTXSID5051319
FormulaC35H29N2NaO7S2
Mol. Weight676.73 g/mol
SMILES[Na+].CC1=CC=CC(C)=C1NC1=CC2=C(C=C1)C(C1=CC=CC=C1S([O-])(=O)=O)=C1C=CC(NC3=C(C)C=CC(=C3C)S([O-])(=O)=O)=CC1=[O+]2

Data Sources

Brief citations

Acid Red 289 (CAS 12220-28-9) https://chemicalindependence.com/chemical/12220-28-9/ EPA TSCA Inventory: CAS 12220-28-9. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory