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CAS 6099-57-6 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

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InventoryRef 5937815/10/2010

SODIUM NAPHTHOL SULFONATE

1-Naphthalenesulfonic acid, 4-hydroxy-, monosodium salt

SODIUM NAPHTHOL SULFONATE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 6099-57-6

CAS 6099-57-6PubChem CID 4626046

Sodium 1-naphthol-4-sulfonate

IUPAC name: sodium 4-hydroxynaphthalene-1-sulfonate

Molecular formula: C10H7NaO4S
Molecular weight: 246.22 g/mol
Exact mass: 245.99627416 Da
Topological polar surface area: 85.8 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 4
Covalent units: 2
Defined stereocentres: 0

Also known as

sodium naphthol sulfonate1-Naphthalenesulfonic acid, 4-hydroxy-, monosodium saltSodium 4-hydroxynaphthalene-1-sulphonateNEVILLE WINTER ACIDK4037B899ZRefChem:8877291-naphthol-4-sulfonic acid, sodium salt228-050-0

16 more reported names

1-Naphthol-4-sulfonic acid sodium salt4-Hydroxy-1-naphthalenesulfonic acid sodium saltSodium 4-hydroxy-1-naphthalenesulfonatesodium;4-hydroxynaphthalene-1-sulfonate4-Hydroxy-1-naphthalenesulfonic acid monosodium salt1-Naphthalenesulfonic acid, 4-hydroxy-, sodium salt (1:1)Neville Winther AcidSodium 4-hydroxynaphthalenesulphonateUNII-K4037B899ZEINECS 228-050-0EINECS 298-446-6AI3-090521-Hydroxynaphthalene-4-sulfonic acid sodium saltsodium4-hydroxynaphthalene-1-sulfonateAS-143864-Hydroxy-1-naphthalenesulfonic acid sodium

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

EPA DTXSID:DTXSID6064113

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for SODIUM NAPHTHOL SULFONATE

INCI name

SODIUM NAPHTHOL SULFONATE

Description

1-Naphthalenesulfonic acid, 4-hydroxy-, monosodium salt

Record provenance

Inventory reference: 59378
Imported identity: SODIUM NAPHTHOL SULFONATE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for SODIUM NAPHTHOL SULFONATE

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Key data

CAS

6099-57-6

228-050-0

Restriction

—

Function

ABSORBENT: Taking up water- and/or oil-soluble (dissolved or finely dispersed) substances.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#26835 · SODIUM NAPHTHOL SULFONATE

Ingredients with overlapping formulation functions

SODIUM CYCLODEXTRIN BUTYLSULFONATEABSORBENT, PRESERVATIVE, SOLVENT, SURFACTANT - CLEANSING

SODIUM HUMATEABSORBENT, ANTIMICROBIAL, BUFFERING, CHELATING

SODIUM MAGNESIUM ALUMINUM SILICATEABSORBENT

SODIUM MAGNESIUM FLUOROSILICATEABRASIVE, ABSORBENT, OPACIFYING, VISCOSITY CONTROLLING

SODIUM POLYACRYLATEABSORBENT, BINDING, EMULSION STABILISING, FILM FORMING, HAIR FIXING, SKIN CONDITIONING, SKIN CONDIT…

SODIUM POLYACRYLATE STARCHABSORBENT, BINDING, EMULSION STABILISING, FILM FORMING, VISCOSITY CONTROLLING

SODIUM SILVER ALUMINUM SILICATEABSORBENT, DEODORANT

SODIUM STARCH OCTENYLSUCCINATEABSORBENT, EMULSION STABILISING, VISCOSITY CONTROLLING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox 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

How SODIUM NAPHTHOL SULFONATE appears in the CosIng inventory

The CosIng inventory lists SODIUM NAPHTHOL SULFONATE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

SODIUM NAPHTHOL SULFONATE is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

SODIUM NAPHTHOL SULFONATE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, SODIUM NAPHTHOL SULFONATE carries the following function designation(s):

ABSORBENT

CAS 6099-57-6 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for SODIUM NAPHTHOL SULFONATE

This page reproduces the CosIng inventory entry for SODIUM NAPHTHOL SULFONATE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research SODIUM NAPHTHOL SULFONATE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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