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CAS 17902-57-7 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 7588115/10/2010

DIMETHYL OXOBENZO DIOXASILANE

2,2-Dimethyl-4-oxobenzo-1,3,2-dioxasilane

DIMETHYL OXOBENZO DIOXASILANE 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 17902-57-7

CAS 17902-57-7PubChem CID 12696375

Dimethyl oxobenzo dioxasilane

IUPAC name: 2,2-dimethyl-1,3,2-benzodioxasilin-4-one

Molecular formula: C9H10O3Si
Molecular weight: 194.26 g/mol
Exact mass: 194.03992071 Da
Topological polar surface area: 35.5 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 0

Also known as

4H-1,3,2-Benzodioxasilin-4-one, 2,2-dimethyl-Pro-DSB (10/palmitate octyle)8I196F2UJ0Benzoic acid, o-(hydroxydimethylsiloxy)-, delta-lactoneBENZOIC ACID, O-(HYDROXYDIMETHYLSILOXY)-, .DELTA.-LACTONERefChem:588295DIMETHYL OXOBENZO DIOXASILANE [INCI]UNII-8I196F2UJ0

2 more reported names

PYIPVTMVCJRGJU-UHFFFAOYSA-N2,2-Dimethyl-2H,4H-1,3,2-benzodioxasilin-4-one

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

EPA DTXSID:DTXSID10170763

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 DIMETHYL OXOBENZO DIOXASILANE

INCI name

DIMETHYL OXOBENZO DIOXASILANE

Description

2,2-Dimethyl-4-oxobenzo-1,3,2-dioxasilane

Record provenance

Inventory reference: 75881
Imported identity: DIMETHYL OXOBENZO DIOXASILANE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for DIMETHYL OXOBENZO DIOXASILANE

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Key data

CAS

17902-57-7

418-660-7

Restriction

—

Function

SKIN CONDITIONING: Maintaining the skin in good condition.

Official EU ingredient-name evidence

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

#8990 · DIMETHYL OXOBENZO DIOXASILANE

Ingredients with overlapping formulation functions

DIMETHYL LAURAMINE DIMER DILINOLEATEHAIR CONDITIONING, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

DIMETHYL LAURAMINE ISOSTEARATEEMULSION STABILISING, HAIR CONDITIONING, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

DIMETHYL LAURAMINE OLEATEANTISTATIC, HAIR CONDITIONING, SKIN CONDITIONING, VISCOSITY CONTROLLING

DIMETHYL LAUROYL LYSINESKIN CONDITIONING

DIMETHYL SUCCINATEFRAGRANCE, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT, SOLVENT

DIMETHYLACRYLAMIDE/ACRYLIC ACID/POLYSTYRENE ETHYL METHACRYLATE COPOLYMERFILM FORMING, SKIN CONDITIONING, VISCOSITY CONTROLLING

DIMETHYLAMINOBENZAMIDOPROPYL/METHYL POLYSILSESQUIOXANEANTIOXIDANT, FILM FORMING, LIGHT STABILIZER, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

DIMETHYLAMINOETHANOL TARTRATESKIN 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 DIMETHYL OXOBENZO DIOXASILANE appears in the CosIng inventory

The CosIng inventory lists DIMETHYL OXOBENZO DIOXASILANE 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.

DIMETHYL OXOBENZO DIOXASILANE 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

DIMETHYL OXOBENZO DIOXASILANE 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, DIMETHYL OXOBENZO DIOXASILANE carries the following function designation(s):

SKIN CONDITIONING

CAS 17902-57-7 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 DIMETHYL OXOBENZO DIOXASILANE

This page reproduces the CosIng inventory entry for DIMETHYL OXOBENZO DIOXASILANE 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 DIMETHYL OXOBENZO DIOXASILANE 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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