三甲氧基十八烷基硅烷

Description

trimethoxyoctadecylsilane · CAS 3069-42-9 · C21H46O3Si. UNII A5R7Q56VX6.

Identification

CAS Registry Number	3069-42-9
PubChem CID	76486
Molecular formula	C21H46O3Si
IUPAC name	trimethoxy(octadecyl)silane
UNII (FDA)	A5R7Q56VX6

Computed Descriptors

Molecular Weight	374.7
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	20
Exact Mass	374.32162186
Monoisotopic Mass	374.32162186
Topological Polar Surface Area	27.7
Heavy Atom Count	25
Formal Charge	0
Complexity	249

Physical description & handling notes

• Liquid; [Sigma-Aldrich MSDS]

Regulatory Status

GHS notification summary	40.5% (30 / 74)

GHS Hazard Classification

GHS notification summary	40.5% (30 / 74)
Reported hazard statements	H315 (59.5%), H319 (59.5%), H335 (54.1%)

Documented Uses

• Used to form self-assembled monolayers for high contrast patterned adsorption of bovine serum albumin and derivatives. [ChemIDplus]
• Silane, trimethoxyoctadecyl-: ACTIVE

Synonyms

Octadecyltrimethoxysilane; 3069-42-9; n-Octadecyltrimethoxysilane; Trimethoxyoctadecylsilane; Silane, trimethoxyoctadecyl-; A5R7Q56VX6; DTXSID40883733; LSX-6817; TSL-8185; TSL-8186; KH-311; O-0256; OTMS-silane; RefChem:164046; DTXCID401023229; 221-339-2

Frequently Asked Questions

What are the CAS number and molecular formula of trimethoxyoctadecylsilane?

CAS 3069-42-9; molecular formula C21H46O3Si; molecular weight — g/mol.

What other names is trimethoxyoctadecylsilane known by?

Octadecyltrimethoxysilane, 3069-42-9, n-Octadecyltrimethoxysilane, Trimethoxyoctadecylsilane, Silane, trimethoxyoctadecyl-, A5R7Q56VX6.

Is trimethoxyoctadecylsilane classified as hazardous?

40.5% of GHS notifications report no hazard classification (30 of 74).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.