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CAS 18748-98-6

CAS 18748-98-6 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 18748-98-6

CAS 18748-98-6PubChem CID 87778

Stearoxytrimethylsilane

IUPAC name: trimethyl(octadecoxy)silane

Molecular formula: C21H46OSi
Molecular weight: 342.7 g/mol
Exact mass: 342.331792621 Da
Topological polar surface area: 9.2 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 1
Covalent units: 1
Defined stereocentres: 0

Also known as

Trimethyl(octadecyloxy)silaneSilane, trimethyl(octadecyloxy)-stearoxy trimethylsilanestearoxy trimethyl silaneEINECS 242-554-89862TW94B2SILCARE SILICONE 1M71STEAROXYTRIMETHYLSILANE [II]

16 more reported names

STEAROXYTRIMETHYLSILANE (II)stearyloxytrimethylsilaneRefChem:889157Silane, trimethyl(octadecyloxy)STEAROXYTRIMETHYLSILANE [INCI]242-554-8EINECS 242-553-21-Octadecanol, TMS derivativeUNII-9862TW94B21-Octadecanol, O-TMSOctadecoxy-trimethylsilaneTrimethyl stearyloxysilane(Octadecyloxy)trimethylsilane1-TrimethylsilyloxyoctadecaneOctadecan-1-ol, TMS etherOctadecyl trimethylsilyl ether

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External database identifiers

EPA DTXSID:DTXSID5066405

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 18748-98-6

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CAS 18748-98-6 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 18748-98-6 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.