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C.I. Pigment Red 48

CAS 16013-44-8

2-Naphthalenecarboxylic acid, 4-[2-(5-chloro-4-methyl-2-sulfophenyl)diazenyl]-3-hydroxy-

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

Molecular structure of 16013-44-8
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

CAS16013-44-8
PubChem CIDNot recorded
DTXSIDDTXSID9065994
FormulaC18H13ClN2O6S
Mol. Weight420.82 g/mol
SMILESCC1=CC(=C(C=C1Cl)N=NC1=C2C=CC=CC2=CC(C(O)=O)=C1O)S(O)(=O)=O

Data Sources

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Brief citations

C.I. Pigment Red 48 (CAS 16013-44-8) https://chemicalindependence.com/chemical/16013-44-8/ EPA TSCA Inventory: CAS 16013-44-8. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory