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CAS 68331-91-9 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 9599019/04/2018

SODIUM STEARIC ACID SULFATE

Octadecanoic acid, 9(or 10)-(sulfooxy)-, sodium salt (1:?)

SODIUM STEARIC ACID SULFATE 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 68331-91-9

CAS 68331-91-9PubChem CID 23668646

Octadecanoic acid, 9-(sulfooxy)-, monosodium salt

IUPAC name: sodium 1-carboxyheptadecan-8-yl sulfate

Molecular formula: C18H35NaO6S
Molecular weight: 402.5 g/mol
Exact mass: 402.20520429 Da
Topological polar surface area: 112.0 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 6
Covalent units: 2
Defined stereocentres: 0

Also known as

9(or 10)-(Sulfooxy)stearic acid sodium saltSodium 9-(sulfooxy)stearateOctadecanoic acid, 9-(sulfooxy)-, sodium salt (1:1)9(or 10)-(Sulfooxy)stearic acid monosodium saltEINECS 269-770-59(Or 10)-(sulphooxy)octadecanoic acid, sodium saltOctadecenoic acid, sulfate, monosodium saltOctadecanoic acid, 9(or 10)-(sulfooxy)-, sodium salt

5 more reported names

Octadecanoic acid, 9(or 10)-(sulfooxy)-, sodium salt (1:?)EINECS 273-422-8Sodium hydrogen 9(or 10)-(sulphonatooxy)octadecanoateOctadecanoic acid, 9(or 10)-(sulfooxy)-, monosodium saltOctadecanoic acid, 9(or 10)-(sulfooxy)-, sodium salt (1:1)

Open full PubChem record PubChem annotations 3D structure image

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 STEARIC ACID SULFATE

INCI name

SODIUM STEARIC ACID SULFATE

Description

Octadecanoic acid, 9(or 10)-(sulfooxy)-, sodium salt (1:?)

Record provenance

Inventory reference: 95990
Imported identity: SODIUM STEARIC ACID SULFATE
Source update: 19/04/2018

European Commission CosIng source notes

Annex records for SODIUM STEARIC ACID SULFATE

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Key data

CAS

68331-91-9

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Restriction

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Function

SOLVENT: Dissolving other components of cosmetics. Solvents are usually liquids (aqueous and nonaqueous).
SURFACTANT - CLEANSING: Wetting body surfaces, emulsifying or solubilizing oils, and suspending soil (generally, such ingredients contribute to the foaming and lathering properties of cleansing products).
SURFACTANT - EMULSIFYING: Helping suspensions or dispersions of liquids in a second liquid by reducing the surface tension of the substances to be emulsified.

Official EU ingredient-name evidence

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

#26999 · SODIUM STEARIC ACID SULFATE

Ingredients with overlapping formulation functions

SH-POLYPEPTIDE-165SOLVENT

SHARK LIVER OILSKIN CONDITIONING, SKIN PROTECTING, SOLVENT

SILK WATERSKIN CONDITIONING - EMOLLIENT; HUMECTANT; SOLVENT; SKIN CONDITIONING - HUMECTANT

SODIUM CYCLODEXTRIN BUTYLSULFONATEABSORBENT, PRESERVATIVE, SOLVENT, SURFACTANT - CLEANSING

SORBETH-20SOLVENT, VISCOSITY CONTROLLING

SORBETH-30HUMECTANT, SOLVENT, SURFACTANT - EMULSIFYING, VISCOSITY CONTROLLING

SORBETH-40HUMECTANT, SOLVENT, SURFACTANT - EMULSIFYING, VISCOSITY CONTROLLING

SORBETH-6SOLVENT, SURFACTANT - EMULSIFYING, 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 STEARIC ACID SULFATE appears in the CosIng inventory

The CosIng inventory lists SODIUM STEARIC ACID SULFATE 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 STEARIC ACID SULFATE is also tagged with 3 cosmetic functions 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 STEARIC ACID SULFATE 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 STEARIC ACID SULFATE carries the following function designation(s):

CAS 68331-91-9 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 STEARIC ACID SULFATE

This page reproduces the CosIng inventory entry for SODIUM STEARIC ACID SULFATE 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 STEARIC ACID SULFATE 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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