5021-93-2

Basic information

• Product Name: DIETHYLDIETHOXYSILANE
• Synonyms: diethoxydiethyl-silan;DIETHOXYDIETHYLSILANE;DIETHYLDIETHOXYSILANE;Silane,diethoxydiethyl-
• CAS NO: 5021-93-2
• Molecular Formula: C₈H₂₀O₂Si
• Molecular Weight: 176.33
• EINECS: 225-706-8
• Product Categories: Pharmaceutical Intermediates
• Mol File: 5021-93-2.mol
• Article Data: 10

Chemical Properties

• Melting Point: <0°C
• Boiling Point: 157 °C
• Flash Point: 43°C
• Appearance: /
• Density: 0.858 g/mL at 20 °C(lit.)
• Vapor Pressure: 3.29mmHg at 25°C
• Refractive Index: n20/D 1.402
• CAS DataBase Reference: DIETHYLDIETHOXYSILANE(CAS DataBase Reference)
• NIST Chemistry Reference: DIETHYLDIETHOXYSILANE(5021-93-2)
• EPA Substance Registry System: DIETHYLDIETHOXYSILANE(5021-93-2)

Safety Data

• Hazard Codes: F,Xi
• Statements: 11-36/38
• Safety Statements: 26-36
• RIDADR: UN 1993 3/PG 2
• WGK Germany: 2
• F: 10-21
• TSCA: Yes
• HazardClass: 3.2
• PackingGroup: III
• Hazardous Substances Data: 5021-93-2(Hazardous Substances Data)

Usage

General Description

Diethyldiethoxysilane is a chemical compound that belongs to the organosilicon compound family. Its Chemical Abstracts Service (CAS) number is 78-62-6. It is commonly used in the production of silicones - versatile polymers that are used in many industrial applications. In its standard state, Diethyldiethoxysilane is a clear, colorless liquid with a faint odor. Its molecular formula is (C2H5)2Si(OC2H5)2. Like many organosilicon compounds, it is stable under normal temperatures and pressures but it can cause burns and serious eye damage. It is typically stored in a cool, dry place, in a tightly closed container.

InChI:InChI=1/C8H20O2Si/c1-5-9-11(7-3,8-4)10-6-2/h5-8H2,1-4H3

Upstream product

• 60-29-7 diethyl ether 
• 4667-38-3 dichlorodiethoxysilane 
• 925-90-6 ethylmagnesium bromide 
• 358-06-5 diethylsilyl difluoride 
• 555-75-9 aluminum ethoxide 
• 4667-99-6 chlorotriethoxysilane 
• 557-20-0 diethylzinc 
• 64-17-5 ethanol 
• 1719-53-5 diethyldichlorosilane 
• 18171-09-0 Si(OEt)Et₂Cl 
• 597-67-1 ethoxytriethylsilane 
• 18246-71-4 me2Si(Oet)(On-bu) 
• 115-21-9 ethyltrichlorosilane 
• 78-10-4 tetraethoxy orthosilicate 

Downstream Products

• 18269-81-3 diacetoxy-diethyl-silane 
• 1719-53-5 diethyldichlorosilane 
• 3809-28-7 octa-cyclohexyloctasilsesquioxane 
• 2031-79-0 1,1,3,3,5,5-hexaethylcyclotrisiloxane 
• 597-67-1 ethoxytriethylsilane 
• 24622-77-3 Ethoxy-diethyl-propoxy-silane 
• 20467-07-6 2-[(2-Amino-ethoxy)-diethyl-silanyloxy]-ethylamine 

Relevant articles and documents

Chlorosilane alcoholysis acid removing agent and regeneration method thereof

The invention discloses a chlorosilane alcoholysis acid removing agent and a regeneration method thereof. The regeneration method is characterized in that at a temperature of -10-130 DEG C, a substituting agent and an acid removing agent are added into a reactor in advance, chlorosilane is gradually added, the liquid phase obtained through filtration separation is subjected to rectification after the alcoholysis reaction is completed so as to obtain a silane finished product and the excessive substitution agent, the excessive substitution agent is recycled, and the acid removing agent obtained through filtration separation is recycled after being regenerated. According to the present invention, the yield of the silane prepared by using the process is more than or equal to 95%, and the recovery rate of the acid removing agent is more than or equal to 95%.

Continuous single-stage organomagnesium synthesis of a mixture of ethylethoxysilanes and dimethylethylethoxysilane

Simultaneous synthesis of ethylethoxysilanes and dimethylethylethoxysilane from a mixture of ethyl chloride, tetraethoxysilane, and dimethyldichlorosilane with magnesium (supply rate 75-100 g h-1) was studied. Schemes of intermediate processes are proposed. Reactivity of dimethyldichlorosilane and diethyldichlorosilane relative to each other is evaluated. Various grades of magnesium are tested. To reduce the amount of regenerated solvent (toluene) its mixtures with oligodiethylsiloxanes are used. The mixture of ethyl-substituted silanes can be used in subsequent preparation of oligo-ethylsiloxane liquids modified with the terminal dimethylethylsiloxy groups, which are characterised by improved lubricating properties.

Stepwise organomagnesium synthesis of mixtures of ethyletoxysilanes and ethylchlorosilanes

Mixture of ethylethoxy- and ethylchlorosilanes was prepared in a toluene solution by successive reaction of magnesium with a mixture of ethyl chloride and tetraethoxysilane and then with a mixture of ethyl chloride and tetrachlorosilane.