4617-27-0

Basic information

• Product Name: 1,1,3,3-tetrachloro-1,3-dimethyldisiloxane
• Synonyms: 1,1,3,3-tetrachloro-1,3-dimethyldisiloxane;1,1,3,3-Tetrachloro-1,3-dimethylpropanedisiloxane;Einecs 225-025-6;1,3-Dimethyl-1,1,3,3-Tetrachlorodisiloxane
• CAS NO: 4617-27-0
• Molecular Formula: C₂H₆Cl₄OSi₂
• Molecular Weight: 244.05144
• EINECS: 225-025-6
• Mol File: 4617-27-0.mol
• Article Data: 4

Chemical Properties

• Melting Point: -22 °C
• Boiling Point: 146.2°Cat760mmHg
• Flash Point: 37.1°C
• Appearance: /
• Density: 1.319g/cm³
• Vapor Pressure: 5.91mmHg at 25°C
• Refractive Index: 1.452
• CAS DataBase Reference: 1,1,3,3-tetrachloro-1,3-dimethyldisiloxane(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1,3,3-tetrachloro-1,3-dimethyldisiloxane(4617-27-0)
• EPA Substance Registry System: 1,1,3,3-tetrachloro-1,3-dimethyldisiloxane(4617-27-0)

Safety Data

• Hazardous Substances Data: 4617-27-0(Hazardous Substances Data)

Usage

General Description

1,1,3,3-Tetrachloro-1,3-dimethyldisiloxane is a chemical compound that belongs to the group of organosilicon compounds. It is represented by the molecular formula C2H6Cl4Osi2. Being a relatively stable compound, it does not easily decompose. It is generally characterized by a low level of toxicity, however, contact with eyes or skin may cause irritation or safety hazards, therefore handling of this compound should be done with appropriate protective measures. The chemical is used in various applications such as the production of silicon-based solvents, preparation of silicon derivates, in the pharmaceutical industry, and as a catalyst in a range of chemical reactions.

InChI:InChI=1/C2H6Cl4OSi2/c1-8(3,4)7-9(2,5)6/h1-2H3

Upstream product

• 18165-33-8 1,3-dichloro-1,3-dimethyldisiloxane 
• 75-79-6 Methyltrichlorosilane 
• 676-58-4 methylmagnesium chloride 
• 75-54-7 Dichloromethylsilane 
• 3555-43-9 dichlorotetramethyldisiloxane 
• 807-28-3 1,3-Dimethyl-1,1,3,3-tetraphenyldisiloxan 

Downstream Products

• 373-74-0 methyltrifluorosilane 

Relevant articles and documents

3,5-Dimethylpyrazolyl-Substituted Di- and Trisiloxanes

The synthesis and characterization of di- and trisiloxanes with 3,5-dimethylpyrazolyl (pz*) moieties are presented. Disiloxanes of the type O(SiMe3–npz*n)2(n = 1, 2, and 3 in 2, 3, and 4, respectively) are easily accessible through a trans-silylation approach. Crystal structure analyses of compound 4 and the two side products 5 and 6 illustrate different coordination motifs of pz* (terminal vs. bridging) in the disiloxane system. The reaction of O2Si3Cl8with Me3Sipz* led to the unsymmetrically substituted trisiloxane pz*3SiO-Sipz*2O-SiCl2pz* (7) with bridging pz* units and tetra- and pentacoordinate silicon atoms and the fully pyrazolyl-substituted trisiloxane O2Si3pz*8(8), depending on the choice of the reaction conditions. The29Si NMR properties of 7 were investigated by29Si CP/MAS NMR spectroscopy and supporting quantum chemical calculations analyzing the principal components of the chemical-shift tensor for all three silicon atoms in this molecule.

A CHROMATO-MASS SPECTROMETRIC STUDY OF THE DISPROPORTIONATION OF ORGANYLFLUOROSILOXANES

-