N-octyltriethoxysilane

Description

N-octyltriethoxysilane · CAS 2943-75-1 · C14H32O3Si. UNII LDC331P08E.

Identification

CAS Registry Number	2943-75-1
PubChem CID	76262
Molecular formula	C14H32O3Si
IUPAC name	triethoxy(octyl)silane
UNII (FDA)	LDC331P08E

Computed Descriptors

Molecular Weight	276.49
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	13
Exact Mass	276.21207141
Monoisotopic Mass	276.21207141
Topological Polar Surface Area	27.7
Heavy Atom Count	18
Formal Charge	0
Complexity	159

Physical description & handling notes

• Liquid; Dry Powder; Liquid
• Colorless liquid; [Alfa Aesar MSDS]

Regulatory Status

Regulatory & Food Contact	CIR / INCI: Cosmetic ingredients (Oleth-30) -> CIR (Cosmetic Ingredient Review) CIR / INCI: Cosmetic ingredients (Triethoxycaprylylsilane) -> CIR (Cosmetic Ingredient Review) CIR / INCI: Cleansing; Emulsifying
GHS notification summary	7.9% (59 / 750)

GHS Hazard Classification

GHS notification summary	7.9% (59 / 750)
Reported hazard statements	H226 (14%), H315 (87.1%), H319 (20.8%), H335 (12.7%), H411 (22%)

Documented Uses

• CIR ingredient: Triethoxycaprylylsilane
• Reacted with titanium dioxide for use as polymer filler with food-contact applications; [ExPub: EFSA] Used to make masonry treatment products, coatings, adhesives-sealants, non-metal surface treatment products, polymers, tires, chemicals, rubber products, in electronics, mass hydrophobation, and as a laboratory reagent; [ExPub: ECHA REACH Registrations]
• Painting (Pigments, Binders, and Biocides) [Category: Paint]
• Working with Glues and Adhesives [Category: Other]
• Cosmetics -> Cleansing; Emulsifying
• Not Known or Reasonably Ascertainable

Synonyms

Triethoxyoctylsilane; Triethoxy(octyl)silane; 2943-75-1; Octyltriethoxysilane; triethoxycaprylylsilane; Silane, triethoxyoctyl-; Octyl(triethoxy)silane; Dynasylan OCTEO; Prosil 9202; Silquest A 137; Prosil 9234; A 137 (coupling agent); Caprylyltriethoxysilane; DTXSID2029246; LDC331P08E; NSC-42964

Frequently Asked Questions

What are the CAS number and molecular formula of N-octyltriethoxysilane?

CAS 2943-75-1; molecular formula C14H32O3Si; molecular weight — g/mol.

What other names is N-octyltriethoxysilane known by?

Triethoxyoctylsilane, Triethoxy(octyl)silane, 2943-75-1, Octyltriethoxysilane, triethoxycaprylylsilane, Silane, triethoxyoctyl-.

What is the regulatory status of N-octyltriethoxysilane?

Documented regulatory listings: CIR / INCI: Cosmetic ingredients (Oleth-30) -> CIR (Cosmetic Ingredient Review); CIR / INCI: Cosmetic ingredients (Triethoxycaprylylsilane) -> CIR (Cosmetic Ingredient Review); CIR / INCI: Cleansing; Emulsifying.

Is N-octyltriethoxysilane classified as hazardous?

7.9% of GHS notifications report no hazard classification (59 of 750).

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.