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C.I. Basic Red 18

CAS 25198-22-5

Ethanaminium, 2-[[4-[2-(2-chloro-4-nitrophenyl)diazenyl]phenyl]ethylamino]-N,N,N-trimethyl-, chloride (1:1)

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

Molecular structure of 25198-22-5
1 Cl⁻
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

CAS25198-22-5
PubChem CIDNot recorded
DTXSIDDTXSID50885288
FormulaC19H25Cl2N5O2
Mol. Weight426.34 g/mol
SMILES[Cl-].CCN(CC[N+](C)(C)C)C1=CC=C(C=C1)N=NC1=CC=C(C=C1Cl)[N+]([O-])=O

Data Sources

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Brief citations

C.I. Basic Red 18 (CAS 25198-22-5) https://chemicalindependence.com/chemical/25198-22-5/ EPA TSCA Inventory: CAS 25198-22-5. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory