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C.I. Acid Green 20

CAS 5850-39-5

2,7-Naphthalenedisulfonic acid, 4-amino-3-[2-(4-aminophenyl)diazenyl]-5-hydroxy-6-(2-phenyldiazenyl)-, sodium salt (1:2)

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

Molecular structure of 5850-39-5
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

CAS5850-39-5
PubChem CIDNot recorded
DTXSIDDTXSID00889493
FormulaC22H16N6Na2O7S2
Mol. Weight586.5 g/mol
SMILES[Na+].[Na+].NC1=CC=C(C=C1)N=NC1=C(N)C2=C(O)C(N=NC3=CC=CC=C3)=C(C=C2C=C1S([O-])(=O)=O)S([O-])(=O)=O

Data Sources

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Brief citations

C.I. Acid Green 20 (CAS 5850-39-5) https://chemicalindependence.com/chemical/5850-39-5/ EPA TSCA Inventory: CAS 5850-39-5. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory