Official EU label nameGlossary entry 22475

PONCEAU SX

This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.

Global evidence snapshot

The resolved identity has matching regulatory evidence in 0 of 13 indexed market datasets: 0 country records and 0 EU Annex records. Every result and evidence gap is listed below.

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Resolved identifiers

Resolved substance identity

CAS:4548-53-2

EC:224-909-9

Ingredient index records:

PONCEAU SX

Cosmetic functions: HAIR DYEING

Disodium 3-[(2,4-dimethyl-5-sulphonatophenyl)azo]-4-hydroxynaphthalene-1-sulphonate (14700)

Inventory restriction note: II/1341 (Ponceau SX; CI 14700: when used as a substance in hair dye products)

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1 matched or reported name

PONCEAU SX

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name PONCEAU SX.

That is a statement about this inventory, not about the law: no imported rule is not evidence that a substance is permitted. A rule may exist under a different name, under a CAS or EC number this glossary entry does not carry, or in a dataset not yet imported.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 4548-53-2

CAS 4548-53-2PubChem CID 62542

FD&C Red 4

IUPAC name: disodium;3-[(2,4-dimethyl-5-sulfonatophenyl)diazenyl]-4-hydroxynaphthalene-1-sulfonate

Molecular formula: C18H14N2Na2O7S2
Molecular weight: 480.4 g/mol
Exact mass: 480.00378170 Da
Topological polar surface area: 176.0 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 9
Covalent units: 3
Defined stereocentres: 0

Also known as

RefChem:200921Ponceau SXC.I. Food Red 1Food red 1Crimson 4RFD&C Red No. 4FD & C Red no. 4C.I. Food Red 1, disodium salt

16 more reported names

CI 14700FD and C Red No. 4X3W0AM1JLXC.I. 147001-Naphthalenesulfonic acid, 3-((2,4-dimethyl-5-sulfophenyl)azo)-4-hydroxy-, disodium salt3-((2,4-Dimethyl-5-sulfophenyl)azo)-4-hydroxy-1-naphthalenesulfonic acid, disodium saltRed 4Ponceau SX Lake4R purpleMaple Ponceau SX1-Naphthalenesulfonic acid, 4-hydroxy-3-((6-sulfo-2,4-xylyl)azo)-, disodium saltDisodium 3-((2,4-dimethyl-5-sulphonatophenyl)azo)-4-hydroxynaphthalene-1-sulphonatePurple 4RHexacol Ponceau SXRed shade #24Certicol Ponceau SXS

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External database identifiers

ChEMBL:CHEMBL3185981
EPA DTXSID:DTXSID2021234

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Additional authoritative substance research

Each link searches that source for this identity. A link is a research route, not a claim that the source holds an exact record. What each source is, and its legal weight

Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal US EPA CompTox CTX APIs

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Official source and scope

Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.

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