17082-47-2

Basic information

• Product Name: TETRAKIS(DIMETHYLSILOXY)SILANE
• Synonyms: TETRAKIS(DIMETHYLSILOXY)SILANE;TETRAKIS(DIMETHYLSILYLOXY)SILANE;tetrakis(dimethylsilyl) orthosilicate;1,1,5,5-Tetramethyl-3,3-bis(dimethylsiloxy)pentanetrisiloxane;1,1,5,5-Tetramethyl-3,3-bis(dimethylsilyloxy)pentanetrisiloxane;Silicic acid tetrakis(dimethylsilyl) ester;SIT 7278;SIT 7278.0
• CAS NO: 17082-47-2
• Molecular Formula: C₈H₂₈O₄Si₅
• Molecular Weight: 328.73
• EINECS: 222-613-4
• Product Categories: Si (Classes of Silicon Compounds);Siloxanes;Si-O Compounds;Chemical Synthesis;Organometallic Reagents;Organosilicon;Silicates
• Mol File: 17082-47-2.mol
• Article Data: 6

Chemical Properties

• Melting Point: <0°C
• Boiling Point: 190 °C(lit.)
• Flash Point: 67°C
• Appearance: /
• Density: 0.884 g/mL at 25 °C(lit.)
• Vapor Pressure: 0.112mmHg at 25°C
• Refractive Index: n20/D 1.387(lit.)
• Storage Temp.: Inert atmosphere,Room Temperature
• Water Solubility: Not miscible or difficult to mix in water.
• Sensitive: Moisture Sensitive
• BRN: 1793898
• CAS DataBase Reference: TETRAKIS(DIMETHYLSILOXY)SILANE(CAS DataBase Reference)
• NIST Chemistry Reference: TETRAKIS(DIMETHYLSILOXY)SILANE(17082-47-2)
• EPA Substance Registry System: TETRAKIS(DIMETHYLSILOXY)SILANE(17082-47-2)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36
• RIDADR: NA 1993 / PGIII
• WGK Germany: 3
• F: 10-21
• TSCA: Yes
• Hazardous Substances Data: 17082-47-2(Hazardous Substances Data)

Usage

Uses

Tetrakis(dimethylsiloxy)silane is a polyfunctional organosiloxanes. It is employed for non-volatile NMR standard for high temperature work, in place of the highly volatile and as cross linker for vinyl functional silicones.

InChI:InChI=1/C8H28O4Si5/c1-13(2)9-17(10-14(3)4,11-15(5)6)12-16(7)8/h13-16H,1-8H3

Upstream product

• 1066-35-9 dimethylmonochlorosilane 
• 681-84-5 tetramethylorthosilicate 
• 2441-21-6 iododimethylsilane 
• 3277-26-7 1,1,3,3-Tetramethyldisiloxane 
• 78-10-4 tetraethoxy orthosilicate 
• 14857-34-2 dimethyl(ethoxy)silane 

Downstream Products

• 1243247-19-9 C₃₉H₅₆O₃Si₄ 
• 1243247-18-8 tetrakis(dimethylphenylpropylsiloxy)silane 
• 120-12-7 anthracene 

Relevant articles and documents

Studies on the synthesis and thermal properties of alkoxysilane-terminated organosilicone dendrimers

Silicone core dendrimers bearing terminaldialkoxy andtrialkoxy silane groups were prepared in a three-step synthesis. Initially, the Si-H terminated multifunctional silicone dendrimer, i.e. tetrakis(dimethylsiloxy)silane, was prepared by the reaction of tetraethoxysilane and dimethylethoxysilane. Tetrakis(dimethylsiloxy)silane on reaction with allylglycidylether in the presence of Speier's catalystunderpressure (100 psi) yieldedepoxy- terminateddendrimerin veryhigh yield (95%).Theepoxy-terminated dendrimer was reacted with aminopropylalkoxysilanes to yield the next-generation dendrimer bearing dialkoxy and trialkoxy silane groups. The dendrimers were characterized by the usual physico-chemical techniques, i.e. elemental analysis, FT-IR, 1H, 13C and 29Si NMR. Thermal studies (Thermogravimetric analysis and Thermomechanical analysis) of the alkoxy terminated dendrimers and its cured products were also carried out. Copyright

Preparation of branched siloxane

By reacting a branched siloxane compound of formula (2) containing compounds of formula (1) as an impurity with a disiloxane compound of formula (3) in the presence of an acid compound, there is prepared a branched siloxane of formula (2) containing a reduced level of compounds of formula (1).R1?nSi(OSiR2?3)3-n(OR3)R1?nSi(OSiR2?3)4-nR2?3SiOSiR2?3 R1 is a monovalent hydrocarbon group, R2 and R3 are H or monovalent hydrocarbon groups, and n is 0 or 1.

SYNTHESIS OF TETRAKIS(DIMETHYLSILOXY)- AND TETRAKIS(DIMETHYLORGANYLSILOXY)SILANES

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