Skip to main content
CosIng Checker
CosIng Checker
EU cosmetic ingredients, restrictions and safety
Login
InventoryRef 7454015/10/2010

AZULENE

Bicyclo[5.3.0]decapentaene

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

INCI CheckerCompare all markets Search similar

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.

Markets and their official sourcesSearch every market for this name

Chemical identity and properties

PubChem 2D chemical structure for CAS 275-51-4
CAS 275-51-4PubChem CID 9231

Azulene

Azulene is a mancude carbobicyclic parent consisting of a cycloheptatriene and cyclopentadiene rings. It has a role as a volatile oil component and a plant metabolite. It is an ortho-fused bicyclic arene, a member of azulenes and a mancude carbobicyclic parent. — ChEBI

IUPAC name
azulene
Molecular formula
C10H8
Molecular weight
128.17 g/mol
Exact mass
128.062600255 Da
XLogP3
3.2
Topological polar surface area
0.0 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
0
Covalent units
1
Defined stereocentres
0

Also known as

CyclopentacyclohepteneAzunamicBicyclo[5.3.0]decapentaeneazulenBicyclo(5.3.0)decapentaeneBicyclo(5.3.0)-deca-2,4,6,8,10-pentaene82R6M9MGLPBicyclo(5.3.0)-1,3,5,7,9-decapentaene
16 more reported names
NSC-89248CHEBI:31249RefChem:116159205-993-6EINECS 205-993-6AZULENE [MI]Azulene (JAN)Bicyclo[5.3.0]-1,5,7,9-decapentaeneAZULENE [JAN]SR-01000944574-1BICYCLO-(5.3.0)-DECA-2,4,6,8,10-PENTAENENSC 89248UNII-82R6M9MGLPAzulene (Standard)Azulene, 99%AZULENE [INCI]
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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 AZULENE

INCI name

AZULENE

Description

Bicyclo[5.3.0]decapentaene

Record provenance

Inventory reference
74540
Imported identity
AZULENE
Source update
15/10/2010
European Commission CosIng source notes
Browse

Browse EU annexes

Explore Annex II–VI to see which substances are prohibited, restricted or permitted under specific conditions.

Search

Search annex entries

Search the annex database for entries matching AZULENE or related substances.

Key data

CAS
275-51-4
EC
205-993-6
Restriction
—
Function
SKIN CONDITIONING
Maintaining the skin in good condition.
SOOTHING
Lightening discomfort of the skin or of the scalp.

Official EU ingredient-name evidence

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

#2792 · AZULENE

Ingredients with overlapping formulation functions

ALLANTOIN GLYCYRRHETINIC ACIDSKIN PROTECTING, SOOTHING
ALLANTOIN POLYGALACTURONIC ACIDSKIN CONDITIONING, SKIN PROTECTING, SOOTHING
ALOE ARBORESCENS LEAF EXTRACTMOISTURISING, SKIN CONDITIONING, SOOTHING
AVENA SATIVA MEAL EXTRACTSOOTHING
BETULA ALBA BARK/LEAF EXTRACTASTRINGENT, CLEANSING, SOOTHING, TONIC
BETULA ALBA LEAF EXTRACTASTRINGENT, CLEANSING, FRAGRANCE, SKIN CONDITIONING, SOOTHING, TONIC
BIOFLAVONOIDSSKIN CONDITIONING, SOOTHING
BISABOLOLFRAGRANCE, SKIN CONDITIONING, SOOTHING

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 chemicalsPubChem PUG RESTEU Safety Gate cosmetic product alertsECHA CHEMUS EPA CompToxCosmetic Ingredient Review safety assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortal

How AZULENE appears in the CosIng inventory

The CosIng inventory lists AZULENE 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.

AZULENE 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

AZULENE 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, AZULENE carries the following function designation(s):

CAS 275-51-4 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.
View CAS records

Use the INCI Checker to screen a full ingredient list across selected markets, or compare this substance across all supported market datasets.
Open INCI Checker

Source note for AZULENE

This page reproduces the CosIng inventory entry for AZULENE 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 AZULENE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

View sourcesView updates

Tools & next steps

Check your formula

Scan a full INCI list to detect AZULENE and any linked EU annex restrictions or allergen flags.

INCI Checker

Search similar ingredients

Find other inventory ingredients and annex entries related to AZULENE, its identifiers or nearby name variants.

Search