4781-99-1

Basic information

• Product Name: N-Butyltriethoxy Silane
• Synonyms: N-Butyltriethoxy Silane
• CAS NO: 4781-99-1
• Molecular Formula: C₁₀H₂₄O₃Si
• Molecular Weight: 220.38
• EINECS: 200-258-5
• Mol File: 4781-99-1.mol
• Article Data: 6

Chemical Properties

• Boiling Point: 180.1℃
• Flash Point: 69.6℃
• Appearance: /
• Density: 0.887
• Vapor Pressure: 1.24mmHg at 25°C
• Refractive Index: 1.415
• CAS DataBase Reference: N-Butyltriethoxy Silane(CAS DataBase Reference)
• NIST Chemistry Reference: N-Butyltriethoxy Silane(4781-99-1)
• EPA Substance Registry System: N-Butyltriethoxy Silane(4781-99-1)

Safety Data

• Hazardous Substances Data: 4781-99-1(Hazardous Substances Data)

Usage

General Description

N-Butyltriethoxy Silane is a type of organosilicon compound that contains silicon, carbon, hydrogen, oxygen, and butyl groups. It is primarily used in surface treatments as a waterproofing agent or coupling agent. It can bond with a variety of materials including glass, minerals, metals, and ceramics, providing those surfaces with enhanced properties such as water repellence, increased electrical resistance, improved chemical stability, and improved adhesion. The compound is liquid at room temperature, has a low flash point and should be stored in a cool, well-ventilated area away from ignition sources due to its flammability. Its chemical formula is C10H24O3Si and its CAS number is 18536-91-9.

InChI:InChI=1/C10H24O3Si/c1-5-9-10-14(11-6-2,12-7-3)13-8-4/h5-10H2,1-4H3

Upstream product

• 693-03-8 n-butyl magnesium bromide 
• 78-10-4 tetraethoxy orthosilicate 
• 109-69-3 n-Butyl chloride 
• 109-72-8 n-butyllithium 
• 693-04-9 butyl magnesium bromide 
• 4667-99-6 chlorotriethoxysilane 
• 106-98-9 1-butylene 
• 998-30-1 Triethoxysilane 
• 64-17-5 ethanol 
• 1600-29-9 n-butylsilane 

Downstream Products

• 78-10-4 tetraethoxy orthosilicate 
• 693-04-9 butyl magnesium bromide 

Relevant articles and documents

Impact of reaction products on the Grignard reaction with silanes and ketones

Grignard reactions with alkoxysilanes or carbonyl compounds produce alkoxymagnesium halides as by-products. Kinetic measurements for reactions of silanes and of a ketone were performed with Grignard reagents, enriched in alkoxymagnesium halides and taken in a great excess. The alkoxide-type reaction products complex tightly with Grignard reagents and enhance in this way their nucleophilicity, thus accelerating the reaction. However, alkoxides branched at α-C atom exert an unfavorable steric hindrance to reaction resulting in a decrease in the reaction rate.

Synthetic method of linear dihydric alcohol

The invention discloses a synthetic method of linear dihydric alcohol. The synthetic method comprises the following steps: (1) carrying out hydrosilylation reaction on alpha-olefin and siloxane to obtain alkyl siloxane; (2) carrying out hydroxymethylation reaction on alkyl siloxane, organic metal alkali and a hydrogen acceptor to obtain silyl alcohol; and (3) carrying out oxidation reaction on the silyl alcohol, fluorine-containing metal salt and peroxide to obtain the linear dihydric alcohol. The method has the advantages of mild process, easily available raw material sources, no need of post-treatment after the reaction is completed, capability of being directly used for the next reaction, simplification of the process flow, high conversion rate, high selectivity, low cost and suitability for large-scale production.

On the mechanism derived from kinetic solvent effects of Grignard reactions with silanes

In this communication we present the results of initial kinetic studies in which we have established that alkoxysilanes and chlorosilanes react with Grignard reagents in entirely different ways. The Grignard reaction with alkoxysilanes consists of replacement of a donor molecule at the magnesium centre by silane, followed by a subsequent rearrangement of the complex to the products. Chlorosilanes react without solvent molecule replacement.