Procion Blue H-BS

CAS 29225-66-9

2-Anthracenesulfonic acid, 1-amino-4-[[4-[[4-chloro-6-[[3(or 4)-sulfophenyl]amino]-1,3,5-triazin-2-yl]amino]-3-sulfophenyl]amino]-9,10-dihydro-9,10-dioxo-, sodium salt (1:3)

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

Molecular structure of 29225-66-9
3 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

CAS29225-66-9
PubChem CIDNot recorded
DTXSIDDTXSID501015677
FormulaC29H17ClN7Na3O11S3
Mol. Weight840.09 g/mol
SMILES[Na].[Na].[Na].NC1=C(C=C(NC2=CC(=C(NC3=NC(NC4=CC=CC=C4)=NC(Cl)=N3)C=C2)S([O-])(=O)=O)C2=C1C(=O)C1=CC=CC=C1C2=O)S([O-])(=O)=O.[O-]S(*)(=O)=O |c:17,19,21,24,27,34,41,43,t:1,3,6,8,11,15,39,lp:3:1,8:1,13:1,15:1,17:1,24:1,26:3,27:1,31:3,32:2,33:2,37:2,45:2,47:3,48:2,49:2,50:3,53:2,54:2,m:52:20.21|

Data Sources

Brief citations

Procion Blue H-BS (CAS 29225-66-9) https://chemicalindependence.com/chemical/29225-66-9/ EPA TSCA Inventory: CAS 29225-66-9. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory