Flag of the United StatesAmerican Chemical Independence

Benzenesulfonic acid, 4-[2-[4-[2-(2-phenyl-1H-indol-3-yl)diazenyl]phenyl]diazenyl]-, sodium salt (1:1)

CAS 50814-28-3

Molecular structure of 50814-28-3
1 Na⁺
US productionNot reported
Import value, 2024$1.4B
Top sourceIreland 33%

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

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 293399 · basket

These shares come from HS customs code 293399, which covers 518 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IE 33%IrelandCN 26%ChinaIN 11%IndiaDE 9%GermanyIT 4%Italy

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Chemical Identity

CAS50814-28-3
PubChem CIDNot recorded
DTXSIDDTXSID90885742
FormulaC26H18N5NaO3S
Mol. Weight503.51 g/mol
SMILES[Na+].[O-]S(=O)(=O)C1=CC=C(C=C1)N=NC1=CC=C(C=C1)N=NC1=C(NC2=C1C=CC=C2)C1=CC=CC=C1

Data Sources

← Back to Dashboard

Brief citations

Benzenesulfonic acid, 4-[2-[4-[2-(2-phenyl-1H-indol-3-yl)diazenyl]phenyl]diazenyl]-, sodium salt (1:1) (CAS 50814-28-3) https://chemicalindependence.com/chemical/50814-28-3/ EPA TSCA Inventory: CAS 50814-28-3. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 293399 for CAS 50814-28-3. Reporting year: 2024. https://usatrade.census.gov/