2,7-Naphthalenedisulfonic acid, 5-amino-3-[2-[4-[2-[4-[2-(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)diazenyl]-2-sulfophenyl]ethenyl]-3-sulfophenyl]diazenyl]-4-hydroxy-, lithium sodium salt, compd. with 2,2'-(methylimino)bis[ethanol] (1:?:?:?)
CAS 83783-96-4
EPA and Census publish no US supply data for this chemical.
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
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
Brief citations
2,7-Naphthalenedisulfonic acid, 5-amino-3-[2-[4-[2-[4-[2-(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)diazenyl]-2-sulfophenyl]ethenyl]-3-sulfophenyl]diazenyl]-4-hydroxy-, lithium sodium salt, compd. with 2,2'-(methylimino)bis[ethanol] (1:?:?:?) (CAS 83783-96-4) https://chemicalindependence.com/chemical/83783-96-4/ EPA TSCA Inventory: CAS 83783-96-4. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory