What other records share CAS 614-45-9?

CAS 614-45-9 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 8659115/10/2010

T-BUTYL BENZOYL PEROXIDE

Q: Is T-BUTYL BENZOYL PEROXIDE safe to use in EU cosmetics?

T-BUTYL BENZOYL PEROXIDE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Always verify against the current official CosIng database before formulating.

Q: What function does T-BUTYL BENZOYL PEROXIDE serve in cosmetics?

According to the EU CosIng inventory, T-BUTYL BENZOYL PEROXIDE carries the following function designation(s): UV ABSORBER.

Benzenecarboperoxoic Acid, 1,1,-Dimethylethyl Ester; tert-butyl perbenzoate

T-BUTYL BENZOYL PEROXIDE 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 614-45-9

CAS 614-45-9PubChem CID 11966

tert-Butyl peroxybenzoate

Tert-butyl peroxybenzoate, [<= 50% with inert inorganic solid] is a clear, colorless to slightly yellow liquid with a mild, aromatic odor. Also stored and transported as a mixture with inert solids and as a solvent slurry, to mitigate the explosion hazard. — CAMEO Chemicals

IUPAC name: tert-butyl benzenecarboperoxoate

Molecular formula: C11H14O3
Molecular weight: 194.23 g/mol
Exact mass: 194.094294304 Da
XLogP3: 2.8
Topological polar surface area: 35.5 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 0

Also known as

tert-Butyl perbenzoateChaloxyd tbpbPerbutyl ZEsperox 10t-Butyl perbenzoateTrigonox CBenzoyl tert-butyl peroxideTerc.butylperbenzoan

16 more reported names

Peroxybenzoic acid, tert-butyl esterBenzenecarboperoxoic acid, 1,1-dimethylethyl esterPerbenzoate de butyle tertiairePerbenzoic acid, tert-butyl esterPEROXYBENZOIC ACID, T-BUTYL ESTERNSC-674terc.Butylester kyseliny peroxybenzoove54E39145KTRefChem:188216peroxybenzoic acid t-butyl ester210-382-2tert-Butyl peroxy benzoatet-Butyl peroxybenzoatebenzenecarboperoxoic acid tert-butyl estertert-butylperoxybenzoatet-Butyl peroxy benzoate

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEMBL:CHEMBL1328092
EPA DTXSID:DTXSID9024699
PubMed:22643457
PubMed:22429149
PubMed:21950683
PubMed:21738908
PubMed:21644556
PubMed:18756568
PubMed:18688831
PubMed:18164071
PubMed:16357993
PubMed:14682715
PubMed:14633658
PubMed:14505320

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 T-BUTYL BENZOYL PEROXIDE

INCI name

T-BUTYL BENZOYL PEROXIDE

Description

Benzenecarboperoxoic Acid, 1,1,-Dimethylethyl Ester; tert-butyl perbenzoate

Record provenance

Inventory reference: 86591
Imported identity: T-BUTYL BENZOYL PEROXIDE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for T-BUTYL BENZOYL PEROXIDE

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Key data

CAS

614-45-9

210-382-2

Restriction

—

Function

UV ABSORBER: Protecting the cosmetic product from the effects of UV-light.

Official EU ingredient-name evidence

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

#28347 · T-BUTYL BENZOYL PEROXIDE

Ingredients with overlapping formulation functions

SODIUM/ALUMINUM/IRON/SULFATE/TARTARATE/HYDROXIDEANTIMICROBIAL, CHELATING, DEODORANT, HUMECTANT, OPACIFYING, UV ABSORBER

SPIRULINA PLATENSIS POWDERSKIN PROTECTING, UV ABSORBER

SUNFLOWER SEED OIL ETHYL FERULATE ESTERSANTIOXIDANT, BLEACHING, EMULSION STABILISING, SKIN CONDITIONING - EMOLLIENT, UV ABSORBER

SYNTHETIC RUBY POWDERABRASIVE, SKIN CONDITIONING, UV ABSORBER

TEA-PHENYLBENZIMIDAZOLE SULFONATEUV ABSORBER, UV FILTER

TEREPHTHALYLIDENE DICAMPHOR SULFONIC ACIDLIGHT STABILIZER, UV ABSORBER, UV FILTER

TETRAHYDROCURCUMIN DIACETATEANTIOXIDANT, BLEACHING, SKIN PROTECTING, UV ABSORBER

TITANIUM DIOXIDECOLORANT, OPACIFYING, UV ABSORBER, UV FILTER

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 T-BUTYL BENZOYL PEROXIDE appears in the CosIng inventory

The CosIng inventory lists T-BUTYL BENZOYL PEROXIDE 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.

T-BUTYL BENZOYL PEROXIDE 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

T-BUTYL BENZOYL PEROXIDE 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, T-BUTYL BENZOYL PEROXIDE carries the following function designation(s):

UV ABSORBER

CAS 614-45-9 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 T-BUTYL BENZOYL PEROXIDE

This page reproduces the CosIng inventory entry for T-BUTYL BENZOYL PEROXIDE 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 T-BUTYL BENZOYL PEROXIDE 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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