C.I. Reactive Red 84

CAS 85187-33-3

2-Naphthalenesulfonic acid, 6-amino-5-[2-[4-[(2-bromo-1-oxo-2-propen-1-yl)amino]-2-[(4-methyl-3-sulfophenyl)sulfonyl]phenyl]diazenyl]-, sodium salt (1:2)

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

Molecular structure of 85187-33-3
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

CAS85187-33-3
PubChem CIDNot recorded
DTXSIDDTXSID10890414
FormulaC26H19BrN4Na2O9S3
Mol. Weight753.52 g/mol
SMILES[Na+].[Na+].CC1=CC=C(C=C1S([O-])(=O)=O)S(=O)(=O)C1=CC(NC(=O)C(Br)=C)=CC=C1N=NC1=C(N)C=CC2=CC(=CC=C12)S([O-])(=O)=O

Data Sources

Brief citations

C.I. Reactive Red 84 (CAS 85187-33-3) https://chemicalindependence.com/chemical/85187-33-3/ EPA TSCA Inventory: CAS 85187-33-3. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory