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CAS 141-63-9

CAS 141-63-9 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 141-63-9
CAS 141-63-9PubChem CID 8853

Dodecamethylpentasiloxane

Dodecamethylpentasiloxane is an organosiloxane that is pentasiloxane in which all the hydrogens have been replaced by methyl groups. Metabolite observed in cancer metabolism. It has a role as a human metabolite. — ChEBI

IUPAC name
bis[[dimethyl(trimethylsilyloxy)silyl]oxy]-dimethylsilane
Molecular formula
C12H36O4Si5
Molecular weight
384.84 g/mol
Exact mass
384.14599230 Da
Topological polar surface area
36.9 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
4
Covalent units
1
Defined stereocentres
0

Also known as

1,1,1,3,3,5,5,7,7,9,9,9-DodecamethylpentasiloxanePentasiloxane, dodecamethyl-0QDQ2VQ5YJBRN 1792965UNII-0QDQ2VQ5YJEINECS 205-492-2HSDB 8419Pentasiloxane, 1,1,1,3,3,5,5,7,7,9,9,9-dodecamethyl-
16 more reported names
CHEBI:84272EC 205-492-2PENTASILOXANE, DODECAMETHYL4-04-00-04124 (Beilstein Handbook Reference)DODECAMETHYLPENTASILOXANE [MI]Silicone liquidRefChem:1353991,1,1,3,3,5,5,7,7,9,9,9DodecamethylpentasiloxanePentasiloxane, 1,1,1,3,3,5,5,7,7,9,9,9dodecamethyl205-492-2FBZANXDWQAVSTQ-UHFFFAOYSA-NSimethicone Impurity 8dodecamethyl pentasiloxaneDodecamethylpentasiloxane, 97%bis[[dimethyl(trimethylsilyloxy)silyl]oxy]-dimethyl-silanePentasiloxane,1,1,1,3,3,5,5,7,7,9,9,9-dodecamethyl-
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External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 141-63-9

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How CAS 141-63-9 is used on this site

CAS 141-63-9 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 141-63-9 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.