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CAS 627-88-3 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 9175208/10/2014

ISOAMYL STEARATE

Octadecanoic acid, 3-methylbutyl ester

ISOAMYL STEARATE 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 627-88-3

CAS 627-88-3PubChem CID 69397

Isoamyl stearate

IUPAC name: 3-methylbutyl octadecanoate

Molecular formula: C23H46O2
Molecular weight: 354.6 g/mol
Exact mass: 354.349780706 Da
XLogP3: 10.2
Topological polar surface area: 26.3 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 2
Covalent units: 1
Defined stereocentres: 0

Also known as

Isopentyl stearate3-methylbutyl stearateOctadecanoic acid, 3-methylbutyl ester0OF33FPU9GOXISMOOTH STEINECS 211-015-9ISOPENTYL ALCOHOL, STEARATERefChem:791560

5 more reported names

ISOAMYL STEARATE [INCI]211-015-93-Methyl-2-butenyl octadecanoateWE(4:1(2)(3Me)/18:0)UNII-0OF33FPU9G

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External database identifiers

EPA DTXSID:DTXSID20211772
PubMed:17625272

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 ISOAMYL STEARATE

INCI name

ISOAMYL STEARATE

Description

Octadecanoic acid, 3-methylbutyl ester

Record provenance

Inventory reference: 91752
Imported identity: ISOAMYL STEARATE
Source update: 08/10/2014

European Commission CosIng source notes

Annex records for ISOAMYL STEARATE

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Key data

CAS

627-88-3

211-015-9

Restriction

—

Function

SKIN CONDITIONING: Maintaining the skin in good condition.
SKIN CONDITIONING - EMOLLIENT: Acting as lubricants on the skin surface providing the skin with a soft and smooth appearance.

Official EU ingredient-name evidence

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

#13659 · ISOAMYL STEARATE

Ingredients with overlapping formulation functions

ISOAMYL LAURATESKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

ISOAMYL MEADOWFOAMATESKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

ISOAMYL OLIVATESKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

ISOAMYL PALMITATE/STEARATEHAIR CONDITIONING, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT, UV FILTER

ISOBEHENIC ACIDBINDING; SKIN CONDITIONING - EMOLLIENT

ISOBUTYL ISOSTEARATESKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

ISOBUTYL MEADOWFOAMATESKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

ISOBUTYL MYRISTATESKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

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 ISOAMYL STEARATE appears in the CosIng inventory

The CosIng inventory lists ISOAMYL STEARATE 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.

ISOAMYL STEARATE is also tagged with 2 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

ISOAMYL STEARATE 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, ISOAMYL STEARATE carries the following function designation(s):

CAS 627-88-3 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 ISOAMYL STEARATE

This page reproduces the CosIng inventory entry for ISOAMYL STEARATE 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 ISOAMYL STEARATE 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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Tools & next steps

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