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CAS 163921-85-5

CAS 163921-85-5 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 163921-85-5

CAS 163921-85-5PubChem CID 57370362

1,1,1,3,3,5-Hexafluoro-5-(heptadecafluorooctyl)-5-(pentafluoroethyl)trisiloxane

IUPAC name: difluoro-[fluoro-(1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluorooctyl)-(1,1,2,2,2-pentafluoroethyl)silyl]oxy-trifluorosilyloxysilane

Molecular formula: C10F28O2Si3
Molecular weight: 768.32 g/mol
Exact mass: 767.8758974 Da
Topological polar surface area: 18.5 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 30
Covalent units: 1
Defined stereocentres: 0

Also known as

RefChem:212853PERFLUOROOCTYLETHYL TRISILOXANE

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External database identifiers

EPA DTXSID:DTXSID70724665

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 163921-85-5

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How CAS 163921-85-5 is used on this site

CAS 163921-85-5 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 163921-85-5 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.