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CAS 38421-40-8

CAS 38421-40-8 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 38421-40-8

CAS 38421-40-8PubChem CID 38026

Tetramethyl hexaphenyl tetrasiloxane

IUPAC name: methyl-[methyl(diphenyl)silyl]oxy-[methyl-[methyl(diphenyl)silyl]oxy-phenylsilyl]oxy-phenylsilane

Molecular formula: C40H42O3Si4
Molecular weight: 683.1 g/mol
Exact mass: 682.22110134 Da
Topological polar surface area: 27.7 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 0

Also known as

1,3,5,7-Tetramethyl-1,1,3,5,7,7-hexaphenyltetrasiloxaneEINECS 253-922-2Q0A43X3I6VTetrasiloxane, 1,3,5,7-tetramethyl-1,1,3,5,7,7-hexaphenyl-RefChem:897312TETRAMETHYL HEXAPHENYL TETRASILOXANE [INCI]Tetrasiloxane, 1,3,5,7tetramethyl1,1,3,5,7,7hexaphenyl253-922-2

3 more reported names

UNII-Q0A43X3I6VXQVNZAVBAUQQHU-UHFFFAOYSA-N1,3,5,7-tetramethyl-1,1,3,5,7,7-hexaphenyl-tetrasiloxane

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External database identifiers

EPA DTXSID:DTXSID20959324

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

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CAS 38421-40-8 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.

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