Ingredient Dictionary

AZULENE

Azulene is a mancude carbobicyclic parent consisting of a cycloheptatriene and cyclopentadiene rings.

How much products actually contain

1 products state the amountmedian 0.01%

under 0.01% 0
0.01–0.1% 1
0.1–1% 0
1% or more 0

Amounts are mostly stated by products named after the ingredient, so they may lean towards token amounts.

Of the products containing it, 4 list it before the 1% line and 7 after it (usually 1% or less).

Products using this ingredient

11 of 11 confirmed · likeliest to carry enough first

Definition

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.

Source: PubChem

US FDA substance register · UNII 82R6M9MGLP · registered name AZULENE · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Eases skin discomfortSOOTHINGKeeps skin in good condition (CosIng catch-all)SKIN CONDITIONING

Safety & regulatory references

Not classified under Korea’s toxic-substance GHS list · existing chemical substance

Source: Korea toxic substances GHS register (NIER)

Other restriction: ban substances that deplete the ozone layer

Source: EU CosIng ingredient list

Reviewed by CIR: Final Report on the Safety Assessment of Azulene

Source: US Cosmetic Ingredient Review (CIR)

CIR reviewed this ingredient and flagged its status as: CIR insufficient data ingredients - use not supported (insufficient data or use not supported — CIR's own classification, not a full safety-as-used conclusion).

Source: US Cosmetic Ingredient Review (CIR)

More data — names, identifiers, properties, test records, literature

Official labels & definitions

JCIA labelling name アズレン: 本品は、次の化学式で表される芳香属化合物である。

Source: JCIA labelling names (Japan)

Names & identifiers

AZULENEINCI아줄렌Korean label name (MFDS standard)アズレンJapanese labelling name

CAS No.chemical registry number: 275-51-4
EC No.EU chemical inventory number: 205-993-6
DTXSIDUS EPA chemical ID: DTXSID2059770
DTXCIDUS EPA compound ID: DTXCID7037686

IUPAC: Azulene
Molecular formula: C10H8
Molecular weight: 128.174 g/mol

Measured properties

Appearance: solid
Melting/freezing point: 99 ℃
Initial boiling point and range: 270 ℃
Vapour pressure: 0.489 ㎜Hg(25℃)
Water solubility: 50.2 ㎎/ℓ(Water Solubility 25℃)
Vapour density: 4.4
n-Octanol/water partition coefficient (Kow): 3.2
Molecular weight: 128.171

Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.

Source: KOSHA safety data sheets (Korea)

What products actually use it for

What the 6 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.

Softener and conditioner3
Humectant2
Fragrance1

Source: US EPA CompTox dashboard