Trimethoxy(octadecyl)silane, 90%

Name: Trimethoxy(octadecyl)silane, 90%
Brand: Vaqora Chemicals
SKU: VQ-011161

About Trimethoxy(octadecyl)silane, 90%

Listed under CAS 3069-42-9, Trimethoxy(octadecyl)silane is an organosilicon compound available from Vaqora Chemicals with a typical assay of 90%. The compound has the formula C21H46O3Si, corresponding to a molecular weight of 374.7 g/mol. It is also known as Octadecyltrimethoxysilane or n-Octadecyltrimethoxysilane.

In its supplied form it is a colourless to light yellow liquid. Reported physical data include a melting point of 16-17 °C and a density of 0.883 g/mL at 25 °C. Store in a cool, well-ventilated place, away from sources of ignition, with the container tightly sealed. It carries the GHS signal word “Warning” with 3 hazard statements. Review the Safety Data Sheet before use.

It is commonly used for organic synthesis and API synthesis. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 5 mL, 25 mL, 500 g and 5 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Trimethoxy(octadecyl)silane, 90%
Catalogue No.	VQ-011161
CAS Number	3069-42-9
IUPAC name	trimethoxy(octadecyl)silane
Molecular formula	C₂₁H₄₆O₃Si
Molecular weight	374.7 g/mol
Exact mass	374.3216
Purity / assay	90%
HSN code	29319090
InChIKey	SLYCYWCVSGPDFR-UHFFFAOYSA-N
SMILES	CCCCCCCCCCCCCCCCCC[Si](OC)(OC)OC
PubChem CID	76486

Physical properties
Physical form	Liquid
Appearance	Colourless to light yellow liquid
Melting point	16-17 °C
Density	0.883 g/mL at 25 °C
H-bond donors / acceptors	0 / 3
TPSA	27.7 Å²
Synonyms	Octadecyltrimethoxysilane, n-Octadecyltrimethoxysilane, Trimethoxyoctadecylsilane, Silane, trimethoxyoctadecyl-, LSX-6817, TSL-8185, TSL-8186, KH-311, OTMS-silane, Stearyltrimethoxysilane, Octadecyl-trimethoxysilane, Octadecyltrimethoxysilane (>85%)

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Trimethoxy(octadecyl)silane, 90%?

The CAS Registry Number of Trimethoxy(octadecyl)silane, 90% is 3069-42-9. It is also known as Octadecyltrimethoxysilane, n-Octadecyltrimethoxysilane, Trimethoxyoctadecylsilane.

What is the molecular formula and molecular weight of Trimethoxy(octadecyl)silane, 90%?

Trimethoxy(octadecyl)silane, 90% has the molecular formula C21H46O3Si and a molecular weight of 374.7 g/mol. Its IUPAC name is trimethoxy(octadecyl)silane.

Which grade and pack sizes of Trimethoxy(octadecyl)silane, 90% can I order?

We supply Trimethoxy(octadecyl)silane, 90% in (90%) grade, in 5 mL, 25 mL, 500 g, 5 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Trimethoxy(octadecyl)silane, 90%?

Yes. Every lot of Trimethoxy(octadecyl)silane, 90% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Trimethoxy(octadecyl)silane, 90% be shipped internationally?

Yes. Trimethoxy(octadecyl)silane, 90% is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.