C.I. Disperse Orange 1
CAS 2581-69-3
Benzenamine, 4-[2-(4-nitrophenyl)diazenyl]-N-phenyl-
EPA and Census publish no US supply data for this chemical.
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 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.
Vendor Pricing
$3.76/gAaron Chemicals LLC
CountryHong Kong
Pack$94.00 / 25 g
Purity95%
Vendors4 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
3 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| AA BLOCKS | United States | $4.96 | 25 g | 95% |
| TargetMol Chemicals | China → United States | $624.00 | 500 mg | 99.91% |
| Key Organics Ltd. | United Kingdom | $1610.00 | 100 mg | 95% |
Chemical Identity
CAS2581-69-3
PubChem CIDNot recorded
DTXSIDDTXSID7062536
FormulaC18H14N4O2
Mol. Weight318.336 g/mol
SMILES[O-][N+](=O)C1=CC=C(C=C1)N=NC1=CC=C(NC2=CC=CC=C2)C=C1
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
Brief citations
C.I. Disperse Orange 1 (CAS 2581-69-3) https://chemicalindependence.com/chemical/2581-69-3/ EPA TSCA Inventory: CAS 2581-69-3. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory