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CAS 220997-66-0 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 3327015/10/2010

DICYCLOPENTADIENE/T-BUTYLCRESOL COPOLYMER

Tricyclo[5,2,1,0(2,6)]deca-3,8-diene, polymer with methyl(1,1-dimethylethyl)phenol

DICYCLOPENTADIENE/T-BUTYLCRESOL COPOLYMER 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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What the official INCI name states

The official label is a composite INCI name with 2 named source-material segments. Each segment must be reconciled with the supplier specification.

Identity type from wording: composite
Preparation or form: COPOLYMER
Named source segments: 2

Review parsed source-name segments

DICYCLOPENTADIENE
T-BUTYLCRESOL COPOLYMER

This structure is derived only from the official label wording. It does not establish composition, concentration, chemical equivalence, safety or regulatory permission.

Inventory details for DICYCLOPENTADIENE/T-BUTYLCRESOL COPOLYMER

INCI name

DICYCLOPENTADIENE/T-BUTYLCRESOL COPOLYMER

Description

Tricyclo[5,2,1,0(2,6)]deca-3,8-diene, polymer with methyl(1,1-dimethylethyl)phenol

Record provenance

Inventory reference: 33270
Imported identity: DICYCLOPENTADIENE/T-BUTYLCRESOL COPOLYMER
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for DICYCLOPENTADIENE/T-BUTYLCRESOL COPOLYMER

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Key data

CAS

220997-66-0

—

Restriction

—

Function

ANTIOXIDANT: Inhibiting reactions promoted by oxygen, thus avoiding oxidation and rancidity.

Official EU ingredient-name evidence

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

#8543 · DICYCLOPENTADIENE/T-BUTYLCRESOL COPOLYMER

Ingredients with overlapping formulation functions

DICENTRA SPECTABILIS CALLUS CULTURE EXTRACTANTIOXIDANT, HAIR CONDITIONING, HUMECTANT, SKIN PROTECTING

DICETYL THIODIPROPIONATEANTIOXIDANT

DICTYOPHORA INDUSIATA EXTRACTANTIMICROBIAL, ANTIOXIDANT

DICTYOPTERIS MEMBRANACEA EXTRACTANTIOXIDANT

DIECKOLANTIOXIDANT, CHELATING, HAIR CONDITIONING, SKIN CONDITIONING

DIETHYL ITACONATEANTIOXIDANT; HAIR CONDITIONING; SKIN PROTECTING; SKIN CONDITIONING - MISCELLANEOUS

DIETHYLENE GLYCOL BIS-(T-BUTYL O-CRESOLPROPANOATE)ANTIOXIDANT

DIETHYLPYRAZOLIDINEDIONEANTIOXIDANT

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 DICYCLOPENTADIENE/T-BUTYLCRESOL COPOLYMER appears in the CosIng inventory

The CosIng inventory lists DICYCLOPENTADIENE/T-BUTYLCRESOL COPOLYMER 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.

DICYCLOPENTADIENE/T-BUTYLCRESOL COPOLYMER 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

DICYCLOPENTADIENE/T-BUTYLCRESOL COPOLYMER 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, DICYCLOPENTADIENE/T-BUTYLCRESOL COPOLYMER carries the following function designation(s):

ANTIOXIDANT

CAS 220997-66-0 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 DICYCLOPENTADIENE/T-BUTYLCRESOL COPOLYMER

This page reproduces the CosIng inventory entry for DICYCLOPENTADIENE/T-BUTYLCRESOL COPOLYMER 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 DICYCLOPENTADIENE/T-BUTYLCRESOL COPOLYMER 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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