3353-69-3

Basic information

• Product Name: 1,2-BIS(DICHLOROMETHYLSILYL)ETHANE
• Synonyms: 1,2-ethanediylbis[dichloromethyl-silan;1,2-ethanediylbis[dichloromethyl-Silane;1,2-BIS(DICHLOROMETHYLSILYL)ETHANE;1,2-BIS(METHYLDICHLOROSILYL)ETHANE;1,4-DIMETHYL-1,1,4,4-TETRACHLORO-1,2-DISILETHYLENE;1 4-DIMETHYL-1,1 4 4-TETRACHLORODISILETHYLENE;BIS(METHYLDICHLOROSILYL)ETHANE;ethane-1,2-diylbis[dichloromethylsilane]
• CAS NO: 3353-69-3
• Molecular Formula: C₄H₁₀Cl₄Si₂
• Molecular Weight: 256.11
• EINECS: 222-123-0
• Mol File: 3353-69-3.mol

Chemical Properties

• Melting Point: 33-35 °C(lit.)
• Boiling Point: 208-210 °C(lit.)
• Flash Point: 195 °F
• Appearance: /solid
• Density: 1.263 g/mL at 25 °C(lit.)
• Vapor Pressure: 0.286mmHg at 25°C
• Refractive Index: n20/D 1.476(lit.)
• Water Solubility: 1000g/L at 25℃
• CAS DataBase Reference: 1,2-BIS(DICHLOROMETHYLSILYL)ETHANE(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-BIS(DICHLOROMETHYLSILYL)ETHANE(3353-69-3)
• EPA Substance Registry System: 1,2-BIS(DICHLOROMETHYLSILYL)ETHANE(3353-69-3)

Safety Data

• Hazard Codes: C
• Statements: 34
• Safety Statements: 26-28-36/37/39-45
• RIDADR: UN 2987 8/PG 2
• WGK Germany: 3
• F: 10-21
• TSCA: Yes
• HazardClass: 8
• PackingGroup: II
• Hazardous Substances Data: 3353-69-3(Hazardous Substances Data)

Usage

Flammability and Explosibility

Notclassified

InChI:InChI=1/C4H10Cl4Si2/c1-9(5,6)3-4-10(2,7)8/h3-4H2,1-2H3

Upstream product

• 75-54-7 Dichloromethylsilane 
• 74-86-2 acetylene 
• 124-70-9 Dichloromethylvinylsilane 
• 1719-58-0 Chlorodimethylvinylsilane 
• 1066-35-9 dimethylmonochlorosilane 
• 116-15-4 perfluoropropylene 
• 993-07-7 trimethylsilan 
• 754-05-2 ethenyltrimethylsilane 
• 104-76-7 2-Ethylhexyl alcohol 
• 115-19-5 2-methyl-but-3-yn-2-ol 

Downstream Products

• 18043-74-8 1,2-bis(methyldiethoxysilyl)ethane 
• 4405-22-5 2,5-disilahexane 
• 22588-76-7 1,5-dimethyl-3,3,7,7-tetraphenylbicyclo<3.2.3>1,3,5,7-tetrasila-2,4,6,8-oxane 

Relevant articles and documents

Process for the preparation of halogenated 1,2-disilaethanes

A process for the preparation of halogenated 1,2-disilaethanes of the general formula X3?nRnSi—CHR1CHR1—SiRnX3?n??(I) in which R may be identical or different and denotes a hydrogen atom or a monovalent optionally substituted hydrocarbon radical having 1 to 40 carbon atom(s) per radical, R1may be identical or different and denotes a hydrogen atom or a monovalent optionally substituted hydrocarbon radical having 1 to 40 carbon atom(s) per radical, X denotes a halogen atom and n denotes 0, 1 or 2, wherein halogenated 1,2-disilaethenes of the general formula X3?nRnSi—CR1═CR1—SiRnX3?n??(II) in which R, R1, X and n have the meaning stated above therefor, are reacted with hydrogen in the presence of promoting catalysts. The product is produced in high yield and purity.

Synthesis of difunctional organooxasilacycloalkanes

2,8-Dichloro-2,4,4,6,6,8,10,10,12,12-decamethyl-5-carbacyclohexasiloxane, 4,7-dichloro-2,2,4,7-tetramethyl-1,3-dioxa-2,4,7-trisilacycloheptane, and 4,8-dichloro-2,2,4,8-tetramethyl-1,3-dioxa-2,4,8-trisilacyclooctane were prepared for the first time by heterofunctional condensation of 1,1,7,7-tetrachloro-1,3,3,5,5,7-hexamethyl-4-carbatetrasiloxane with 1,3-dihydroxy-1,1,3,3-tetramethyldisiloxane, of 2,2,5,5-tetrachloro-2,5-disilahexane with dihydroxydimethylsilane, and of 2,2,6,6-tetrachloro-2,6-disilaheptane with dihydroxydimethylsilane, respectively. Hydrolysis of the resulting compounds afforded the corresponding dihydroxy derivatives, and trans-isomers of some of these derivatives were isolated in individual form.

Benzosilacyclobutenes and methods of making

1,1-dimethyl-2,3-benzo-1-sila-2-cyclobutene was synthesized from 2-bromobenzyl bromide through a modified Grignard procedure, which resulted in a higher (41%) than literature reported yield (35%). An alternative approach with a much less costly 2-chlorobenzyl chloride as starting material is also disclosed. In addition, new di-benzosilacyclobutene compounds were synthesized with our modified Grignard procedure. The compounds are useful as coating materials for surfaces, and when applied to metallic surfaces, can be used neat.

On the synthesis of siloxanes. XXIII. Synthesis and spectroscopic characterization of 2-functional 1,3-dioxa-2,4,7-trisilacycloheptanes

A series of 2-functional 1,3-dioxa-2,4,7-trisilacycloheptanes was synthesized and characterized by means of 29Si NMR spectroscopy, gas chromatography, high performance liquid chromatography and gas chromatography-mass spectrometry.The signals were assigned to the various configurational isomers.This assignment was confirmed by independent synthesis of individual isomers.The sequence of the NMR signals of the all-cis and trans-trans isomers required for the determination of stereochemistry was found to be the same as that of the respective cyclotrisiloxanes.Keywords: Cyclosiloxanes; Synthesis; Spectroscopic characterization

Organosilicon compound and process for producing organosilicon compound

An organosilicon compound having a Si--C--C--Si bond, a C=C--Si bond and/or a CH--CH--Si bond is prepared by reacting an olefin or a substituted olefin with a disilane in the presence of a platinum-containing catalyst. The resulting compound can be further treated with an alkyl lithium, an aryl lithium or a Grignard reagent.

Novel alkoxysilanes

Novel alkoxysilanes of the general formula: STR1 wherein letter a is equal to 2 or 3, b is equal to 0, 1, 2 or 3, and n is an integer of from 2 to 10 are useful agents for controlling curing reaction of addition type curable silicone compositions.