C.I. Direct Violet 51 disodium salt
CAS 5489-77-0
2-Naphthalenesulfonic acid, 3-[2-[4-[2-(2,4-dimethyl-6-sulfophenyl)diazenyl]-2-methoxy-5-methylphenyl]diazenyl]-4-hydroxy-7-(phenylamino)-, sodium salt (1:2)
EPA and Census publish no US supply data for this chemical.
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 unknownWhere 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
CAS5489-77-0
PubChem CIDNot recorded
DTXSIDDTXSID6063935
FormulaC32H27N5Na2O8S2
Mol. Weight719.69 g/mol
SMILES[Na+].[Na+].COC1=C(C=C(C)C(=C1)N=NC1=C(C=C(C)C=C1C)S([O-])(=O)=O)N=NC1=C(C=C2C=C(NC3=CC=CC=C3)C=CC2=C1O)S([O-])(=O)=O
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
Brief citations
C.I. Direct Violet 51 disodium salt (CAS 5489-77-0) https://chemicalindependence.com/chemical/5489-77-0/ EPA TSCA Inventory: CAS 5489-77-0. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory