N'-(2-hydroxyethyl)-4-nitro-o-phenylenediamine (HC Yellow 5)
CAS 56932-44-6
Ethanol, 2-[(2-amino-4-nitrophenyl)amino]-
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
$1.44/gAngene Chemical
CountryChina (registered: Hong Kong)
Pack$36.00 / 25 g
Purity98%
Vendors11 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
10 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 |
|---|---|---|---|---|
| Aaron Chemicals LLC | Hong Kong | $1.52 | 25 g | 98% |
| AA BLOCKS | United States | $3.00 | 5 g | 98% |
| AK Scientific Specialized | United States | $3.60 | 25 g | 95% |
| AK Scientific, Inc. | United States | $4.07 | 100 g | 98% |
| A2B Chem LLC | United States | $4.38 | 100 g | 99% |
| Angene International Limited | United States | $6.60 | 100 g | 98% |
| Combi-Blocks, Inc. | United States | $9.60 | 25 g | 95% |
| AstaTech (2 weeks) | United States | $9.60 | 5 g | 95% |
| Labotest KG | Germany | $453.00 | 1000 mg | 90% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 98% |
Chemical Identity
CAS56932-44-6
PubChem CIDNot recorded
DTXSIDDTXSID4043939
FormulaC8H11N3O3
Mol. Weight197.194 g/mol
SMILESNC1=C(NCCO)C=CC(=C1)[N+]([O-])=O
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
Brief citations
N'-(2-hydroxyethyl)-4-nitro-o-phenylenediamine (HC Yellow 5) (CAS 56932-44-6) https://chemicalindependence.com/chemical/56932-44-6/ EPA TSCA Inventory: CAS 56932-44-6. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory