3555-47-3

Basic information

• Product Name: TETRAKIS(TRIMETHYLSILOXY)SILANE
• Synonyms: 1,1,1,5,5,5-hexamethyl-3,3-bis-(trimethylsilanyloxy)-trisiloxane;1,1,1,5,5,5-hexamethyl-3,3-bis(trimethylsiloxy)-Trisiloxane;1,1,1,5,5,5-hexamethyl-3,3-bis[(trimethylsilyl)oxy]-trisiloxan;1,1,1,5,5,5-hexamethyl-3,3-bis[(trimethylsilyl)oxy]-Trisiloxane;1,1,1,5,5,5-hexamethyl-3,3-bis-trimethylsilanyloxy-trisiloxane;1,1,5,5,5-hexamethyl-3,3-bis[(trimethylsilyl)oxy]trisiloxane;Tetrakis-(trimethylsilyloxy)-silan;Trisiloxane,1,1,1,5,5,5-hexamethyl-3,3-bis[(trimethylsilyl)oxy]-
• CAS NO: 3555-47-3
• Molecular Formula: C₁₂H₃₆O₄Si₅
• Molecular Weight: 384.84
• EINECS: 222-613-4
• Product Categories: Organics;OthersOrganometallic Reagents;Organometallic Reagents;Organosilicon;Trialkoxysilanes
• Mol File: 3555-47-3.mol
• Article Data: 22

Chemical Properties

• Melting Point: -60 °C
• Boiling Point: 103-106 °C2 mm Hg(lit.)
• Flash Point: 169 °F
• Appearance: /liquid
• Density: 0.87 g/mL at 25 °C(lit.)
• Vapor Pressure: 0.00512mmHg at 25°C
• Refractive Index: n20/D 1.389(lit.)
• Storage Temp.: Inert atmosphere,Room Temperature
• Water Solubility: 150.7ng/L at 23℃
• BRN: 1793898
• CAS DataBase Reference: TETRAKIS(TRIMETHYLSILOXY)SILANE(CAS DataBase Reference)
• NIST Chemistry Reference: TETRAKIS(TRIMETHYLSILOXY)SILANE(3555-47-3)
• EPA Substance Registry System: TETRAKIS(TRIMETHYLSILOXY)SILANE(3555-47-3)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36
• WGK Germany: 3
• TSCA: Yes
• Hazardous Substances Data: 3555-47-3(Hazardous Substances Data)

Usage

Chemical Properties

Colorless liquid

Uses

Tetrakis(trimethylsilyloxy)silane (TTMS) is an organosilicon compound used as a precursor to prepare nanostructured organosilicon polymer films by plasma-enhanced chemical vapor deposition (PECVD) at atmospheric pressure. TTMS along with cyclohexane can also be used to synthesize low dielectric constant SiCOH films by PECVD method.

Flammability and Explosibility

Notclassified

InChI:InChI=1/C12H36O4Si5/c1-17(2,3)13-21(14-18(4,5)6,15-19(7,8)9)16-20(10,11)12/h1-12H3

Upstream product

• 75-77-4 chloro-trimethyl-silane 
• 17477-97-3 1,1,1,5,5,5-hexamethyl-3-trimethylsiloxy-3-hydroxytrisiloxane 
• 78-10-4 tetraethoxy orthosilicate 
• 993-07-7 trimethylsilan 
• 754-05-2 ethenyltrimethylsilane 
• 107-46-0 Hexamethyldisiloxane 
• 10026-04-7 tetrachlorosilane 
• 18027-10-6 sodium trimethylsilanolate 
• 71-43-2 benzene 
• 1066-40-6 Trimethylsilanol 
• 400-53-3 trimethylsilyl trifluoroacetate 
• 2754-27-0 trimethylsilyl acetate 
• 71-36-3 butan-1-ol 
• 67-63-0 isopropyl alcohol 

Downstream Products

• 420-56-4 trimethylsilyl fluoride 
• 144090-04-0 tris(trimethylsiloxy)difluoro(phenyl)silane 
• 89-63-4 4-Chloro-2-nitroaniline 
• 75-76-3 tetramethylsilane 

Relevant articles and documents

Trimethylsilyl Derivatives for the Study of Silicate Structures. Part 7. Calcium Silicate Structures

A detailed study was made of the yield and products of trimethylsilylation of calcium orthosilicate (Ca2), rankinite (Ca3), and pseudowollastonite (Ca3) under various experimantal conditions.With hexamethyldisiloxane, chlorotrimethylsilane, and isopropylalcohol as reagents, in the absence of added water Ca2 yielded predominantly SiO4(SiMe3)x(Pri)4-x (x = 1-4) and a lesser amount of Si2O7(SiMe3)x(Pri)6-x (x = 2-6), Ca3 gave predominantly Si2O7(SiMe3)x(Pri)6-x (x = 2-6), and Ca3 gave predominantly Si3O9(SiMe3)x(Pri)6-x (x = 2-6) and Si3O10(SiMe3)x(Pri)8-x (x = 3-8).Mixed trimethylsilyl-isopropyl derivatives were converted to the fully trimethylsilylated derivatives SiO4(SiMe3)4, Si2O7(SiMe3)6, and Si3O10(SiMe3)8 on treatment with Amberlyst 15 ion-exchange resin in the presence of hexamethyldisiloxane.In the trimethylsilylation of Ca2 reaction of mineral itself is complete within ca. 6 min at room temparature, under the conditions employed, and the majority of unwanted side reactions which yield Si2O7 and Si3O10 derivatives occur during the first 3-4 min.Side reactions may be suppressed by increasing the proportion of isopropyl alcohol and decreasing that of Ca2 in the reagents.The presence of both isopropyl alcohol and chlorotrimethylsilane is necessary for reaction to occur.Isopropyl alcohol may be replaced by either ethyl alcohol or water, altough the yield is reduced.When isopropyl alcohol is replaced by water, only the fully trimethylsilylated derivatives are formed.The mechanism of the reaction is discussed and experimental conditions are described which gives highest yields of the desired products.

O-Metalation of silanols and POSS silanols over Amberlyst-15 catalyst: A facile route to unsymmetrical siloxanes, borasiloxanes and germasiloxanes

A simple and highly practical Amberlyst-catalyzed direct O-metalation of silanols, POSS silanols and alkoxysilanes under mild conditions is proposed. This protocol can be applied to the synthesis of a wide range of important organosilicon derivatives such as siloxanes, germasiloxanes, borasiloxanes and functionalized silsesquioxanes. It is worth noting that Amberlyst-15 can be reused for further experiments and its catalytic activity in this process is well-preserved for several recycling steps.

BRANCHED ORGANOSILOXANES USED AS HEAT TRANSFER FLUID

The invention relates to a method for operating a system at an operating temperature of between 300° C. and 500° C., using a heat transfer fluid comprising branched siloxanes of general formula (I) (R3SiO1/2), (SiO4/2) in which w represents integral values of between 4 and 20, z represents integral values of between 1 and 15, and R represents a methyl group, the sum of the fractions of all siloxanes of general formula (1) being at least 95 mass %, in relation to the whole heat transfer fluid.