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C.I. Reactive Orange 16

CAS 20262-58-2

2-Naphthalenesulfonic acid, 6-(acetylamino)-4-hydroxy-3-[2-[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]diazenyl]-, sodium salt (1:2)

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

Molecular structure of 20262-58-2
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.

Vendor Pricing

$0.55/gAA BLOCKS
CountryUnited States
Pack$277.00 / 500 g
Purity90%
Vendors1 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

Chemical Identity

CAS20262-58-2
PubChem CIDNot recorded
DTXSIDDTXSID5066586
FormulaC20H17N3Na2O11S3
Mol. Weight617.53 g/mol
SMILES[Na+].[Na+].CC(=O)NC1=CC2=C(O)C(N=NC3=CC=C(C=C3)S(=O)(=O)CCOS([O-])(=O)=O)=C(C=C2C=C1)S([O-])(=O)=O

Data Sources

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Brief citations

C.I. Reactive Orange 16 (CAS 20262-58-2) https://chemicalindependence.com/chemical/20262-58-2/ EPA TSCA Inventory: CAS 20262-58-2. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory