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CAS 541-02-6

CAS 541-02-6 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 541-02-6
CAS 541-02-6PubChem CID 10913

Decamethylcyclopentasiloxane

Cyclomethicone 5 is member of cyclomethicone, which are a group of liquid methyl siloxanes that have low viscosity and high volatility. Cyclomethicones are cyclic in structure with a monomer backbone of one silicon and two oxygen atoms bonded together. Cyclomethicone 5 is used in cosmetic and personal products as a skin emollient. — DrugBank

IUPAC name
2,2,4,4,6,6,8,8,10,10-decamethyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane
Molecular formula
C10H30O5Si5
Molecular weight
370.77 g/mol
Exact mass
370.09395673 Da
Topological polar surface area
46.2 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
5
Covalent units
1
Defined stereocentres
0

Also known as

Cyclomethicone 5Dimethylsiloxane pentamerDow corning 345Cyclic dimethylsiloxane pentamerNUC silicone VS 7158Silicon SF 1202CiclopentasiloxaneCyclomethicone D5
16 more reported names
DekamethylcyklopentasiloxanD5-silKF 995VS 71580THT5PCI0RSF 1202Cyclopentasiloxane, 2,2,4,4,6,6,8,8,10,10-decamethyl-JEESILC CPS-211XIAMETER PMX-0245KF-995DOW CORNING ST CYCLOMETHICONE 5Lightening SerumRefChem:54914Smooth and Soft Cuticles3CE PINK IM GOOD MASCARAAuQuest Smooth and Soft Cuticles
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 541-02-6

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How CAS 541-02-6 is used on this site

CAS 541-02-6 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 541-02-6 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.