18748-98-6

Basic information

• Product Name: trimethyl(octadecyloxy)silane
• Synonyms: trimethyl(octadecyloxy)silane;STEAROXYTRIMETHYLSILANE;Silane, trimethyl(octadecyloxy)-;Trimethyl(octadecyloxy)silan;trimethyl stearyloxysilane;Einecs 242-554-8;Trimethyl(Octadecoxy)Silane;stearyloxytrimethylsilane
• CAS NO: 18748-98-6
• Molecular Formula: C₂₁H₄₆OSi
• Molecular Weight: 342.67484
• EINECS: 242-554-8
• Mol File: 18748-98-6.mol
• Article Data: 4

Chemical Properties

• Melting Point: 15-20°C
• Boiling Point: 387.1°Cat760mmHg
• Flash Point: 197.9°C
• Appearance: /
• Density: 0.821g/cm³
• Vapor Pressure: 7.54E-06mmHg at 25°C
• Refractive Index: 1.439
• Water Solubility: 50μg/L at 20℃
• CAS DataBase Reference: trimethyl(octadecyloxy)silane(CAS DataBase Reference)
• NIST Chemistry Reference: trimethyl(octadecyloxy)silane(18748-98-6)
• EPA Substance Registry System: trimethyl(octadecyloxy)silane(18748-98-6)

Safety Data

• Hazardous Substances Data: 18748-98-6(Hazardous Substances Data)

Usage

General Description

Trimethyl(octadecyloxy)silane is a chemical compound with the molecular formula C24H52OSi. It is a silane-based compound with a hydrophobic nature and is commonly used as a surface modifier or water repellent in various industrial applications. It is a clear, colorless liquid that is insoluble in water but soluble in organic solvents. Trimethyl(octadecyloxy)silane is frequently used as a coating or treatment for substrates such as glass, metal, and plastic to provide water and stain resistance. It can also be utilized as a coupling agent in the production of silane-modified polymers and for enhancing the performance and durability of various materials. Additionally, it is known for its ability to improve adhesion, weather resistance, and corrosion protection in different coatings and adhesives.

InChI:InChI=1/C21H46OSi/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-23(2,3)4/h5-21H2,1-4H3

Upstream product

• 112-92-5 1-octadecanol 
• 25561-30-2 N,O-Bis(trimethylsilyl)trifluoroacetamide 
• 999-97-3 1,1,1,3,3,3-hexamethyl-disilazane 
• 75-77-4 chloro-trimethyl-silane 

Downstream Products

• 112-89-0 1-Bromooctadecane 
• 92414-05-6 octadecyl 2,3,5-tri-O-benzyl-β-D-ribofuranoside 
• 92414-05-6 (2R,3R,4R)-3,4-Bis-benzyloxy-2-benzyloxymethyl-5-octadecyloxy-tetrahydro-furan 

Relevant articles and documents

Tetrabutylammonium phthalimide-N-oxyl: An efficient organocatalyst for trimethylsilylation of alcohols and phenols with hexamethyldisilazane

Tetrabutylammonium phthalimide-N-oxyl (TBAPINO) was found to be an effective organocatalyst for rapid, simple and chemoselective protection of the hydroxyl group of alcohols and phenols using hexamethyldisilazane (HMDS) under mild conditions. The low catalyst loading, high to quantitative yields and simple removal of the catalyst from the reaction mixture illustrate the other attractive features of this protocol.

Phosphomolybdic acid, an efficient catalyst for the trimethylsilylation of alcohols

An easy method for the preparation of trimethylsilyl ethers of alcohols with 1,1,1,3,3,3-hexamethyl- disilazane (HMDS) catalysed by phosphomolybdic acid (PMA) under mild conditions has been carried out in excellent yields.