4518-98-3

Basic information

• Product Name: 1,1,2,2-TETRACHLORO-1,2-DIMETHYLDISILANE
• Synonyms: 1,1,2,2-tetrachloro-1,2-dimethyl-disilan;1,2-Dimethyl,1,1,2,2-Tetrachlorodisilane;Disilane, 1,1,2,2-tetrachloro-1,2-dimethyl-;1,2-DIMETHYLTETRACHLORODISILANE;1,1,2,2-TETRACHLORO-1,2-DIMETHYLDISILANE;1,1,2,2,TETRACHLORO-1,2 DIMETHYLSILANE
• CAS NO: 4518-98-3
• Molecular Formula: C₂H₆Cl₄Si₂
• Molecular Weight: 228.05
• EINECS: 224-844-6
• Product Categories: Dichlorosilanes;Dichlorosilanes (for Polysilanes);Functional Materials;Reagent for High-Performance Polymer Research;Si (Classes of Silicon Compounds);Si-Cl Compounds;Si-Si Compounds;Precursors by Metal;Vapor Deposition Precursors
• Mol File: 4518-98-3.mol
• Article Data: 8

Chemical Properties

• Boiling Point: 145.7°C at 760 mmHg
• Flash Point: 121 °F
• Appearance: /
• Density: 1.269 g/mL at 25 °C(lit.)
• Vapor Pressure: 0.88 psi ( 20 °C)
• Refractive Index: n20/D 1.469(lit.)
• CAS DataBase Reference: 1,1,2,2-TETRACHLORO-1,2-DIMETHYLDISILANE(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1,2,2-TETRACHLORO-1,2-DIMETHYLDISILANE(4518-98-3)
• EPA Substance Registry System: 1,1,2,2-TETRACHLORO-1,2-DIMETHYLDISILANE(4518-98-3)

Safety Data

• Hazard Codes: C
• Statements: 10-14-34
• Safety Statements: 26-27-28-36/37/39-45
• RIDADR: UN 2988 4.3/PG 1
• WGK Germany: 3
• HazardClass: 4.3/3, 8
• PackingGroup: I
• Hazardous Substances Data: 4518-98-3(Hazardous Substances Data)

Usage

General Description

1,1,2,2-Tetrachloro-1,2-dimethyldisilane is a chemical compound with the molecular formula C2H6Cl4Si2. It is a colorless liquid with a faint, sweet odor, and is primarily used as a precursor in the synthesis of organosilicon compounds. 1,1,2,2-Tetrachloro-1,2-dimethyldisilane is highly reactive and should be handled with caution, as it can release toxic fumes when heated or in contact with acids. It is also insoluble in water but soluble in organic solvents. 1,1,2,2-Tetrachloro-1,2-dimethyldisilane is not known to occur naturally, but it is synthesized for use in various industrial applications, such as in the production of silicones and other organosilicon compounds. Due to its potential health hazards, proper safety measures and handling procedures should be followed when working with this chemical.

InChI:InChI=1/C2H6Cl4Si2/c1-7(3,4)8(2,5)6/h1-2H3

Upstream product

• 1450-14-2 1,1,1,2,2,2-hexamethyldisilane 
• 1172-76-5 1,2-dimethyl-1,1,2,2-tetraphenyldisilane 
• 4342-61-4 1,2-dichlorotetramethylsilane 

Downstream Products

• 18379-33-4 dichloro-(2-chloro-benzyl)-methyl-silane 
• 17878-12-5 dichloro-methyl-(3-methyl-benzyl)-silane 
• 18107-32-9 1,1,2,2-tetramethoxy-1,2-dimethyl-disilane 
• 75-79-6 Methyltrichlorosilane 
• 4218-23-9 (trichloromethyl)methyldichlorosilane 
• 90654-96-9 1,2-dimethyl-1-phenyl-1,2,2-trichlorodisilane 
• 18001-76-8 1,1,2,2-tetraethoxydimethyldisilane 
• 1873-92-3 allyldichloromethylsilane 
• 18141-26-9 (m-Nitrophenyl)dichloromethylsilane 
• 65899-10-7 (E)-1,2-bis[dichloro(methyl)silyl]ethene 
• 65899-09-4 (Z)-1,2-bis(dichloromethylsilyl)ethene 
• 90-14-2 1-Iodonaphthalene 
• 162132-31-2 C₂₂H₁₈Si₂ 
• 29442-41-9 1,2-dichloro-1,2-dimethyl-1,2-diphenyldisilane 

Relevant articles and documents

Surface Active Organosilicone Compounds

The present invention relates to new organodisilanes or carbodisilanes, a process for manufacturing the same and their use, in particular, as surface active agents, especially as spreading agents.

Raman and infrared vibrational spectra, ab initio calculations and normal coordinate analyses for 1,2-dimethyltetrachlorodisilane and 1,2-dimethyltetrachlorodisilane-d6

The Raman spectra of CH3Cl2SiSiCl2CH3 and CD3Cl2SiSiCl2CD3 between 3000 and 30 cm-1 have been recorded at various temperatures. The infrared spectra at ambient temperature were recorded from 3000 to 50 cm-1. Both isotopomers exist as a mixture of gauche and anti rotamers at room temperature. The energy difference E(anti)-E(gauche) was determined from the Raman spectra as being -0.9 ± 0.2 kJ mol-1 for CH3Cl2SiSiCl2CH3 and -1.2 ± 0.2 kJ mol-1 for CD3Cl2SiSi2CD3. Assisted by ab initio calculations, the vibrational spectra have been assigned using C(2h) symmetry for the anti rotamers and C2 symmetry for the gauche rotamers. Scaled and unscaled harmonic frequencies and harmonic symmetry force constants have been reported for both rotamers, and normal coordinate analyses have been carried out. Potential energy distributions have been reported.

AEQUILIBRIERUNGSREAKTIONEN AN DISILANEN

Redistribution reactions of Si2Me6 and Si2Cl6 and of Si2Me2Cl4 and Si2Me2H4 are discussed.While the high temperature necessary for the exchange between methyl and chlorine leads to rupture of the silicon-silicon bond in the case of the Si2Me6/Si2Cl6 system, redistribution of chlorine and hydrogen proceeds at room temperature with AlCl3 as catalyst.The reaction between Si2Me2Cl4 and Si2Me2H4 at 90 deg C is examined in detail by 1H NMR spectroscopy.This reaction is a useful route for preparation of the new compounds Me2Si2ClxH4-x (x=1-3). 1H NMR, 13C NMR, 29Si NMR, IR and Raman spectroscopic data of the partly unknown 1,2-dimethylchlorodisilanes are reported.