16066-09-4

Basic information

• Product Name: 1,3-BIS(TRIMETHYLSILOXY)-1,3-DIMETHYLDISILOXANE
• Synonyms: 1,1,1,3,5,7,7,7-octamethyl-tetrasiloxan;bis(Trimethylsiloxy)dimethyldisiloxane;1,3-BIS(TRIMETHYLSILOXY)-1,3-DIMETHYLDISILOXANE;1,1,1,3,5,7,7,7-OCTAMETHYLTETRASILOXANE;3H,5H-OCTAMETHYLTETRASILOXANE;3H,5H-Octamethyltetrasiloxane(1,3-Bis(trimethylsiloxy)-1,3-dimethyldisiloxane);1,3-BIS(TRIMETHYLSILOXY)-1,3-DIMETHYLDISILOXANE 95%;1,1,1,3,5,7,7,7-Octamethylheptanetetrasiloxane
• CAS NO: 16066-09-4
• Molecular Formula: C₈H₂₆O₃Si₄
• Molecular Weight: 282.63
• EINECS: 240-209-6
• Product Categories: Industrial/Fine Chemicals
• Mol File: 16066-09-4.mol
• Article Data: 3

Chemical Properties

• Melting Point: <0°C
• Boiling Point: 92 °C
• Flash Point: 78°C
• Appearance: /
• Density: 0.858
• Refractive Index: 1.3860
• Sensitive: Moisture Sensitive
• CAS DataBase Reference: 1,3-BIS(TRIMETHYLSILOXY)-1,3-DIMETHYLDISILOXANE(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3-BIS(TRIMETHYLSILOXY)-1,3-DIMETHYLDISILOXANE(16066-09-4)
• EPA Substance Registry System: 1,3-BIS(TRIMETHYLSILOXY)-1,3-DIMETHYLDISILOXANE(16066-09-4)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36
• RIDADR: 1993
• TSCA: Yes
• Hazardous Substances Data: 16066-09-4(Hazardous Substances Data)

Usage

General Description

1,3-Bis(trimethylsiloxy)-1,3-dimethyldisiloxane, also known by its CAS number 53992-35-5, is a chemical compound that is used in various industrial applications. It is known for its superior stability and reactivity, which make it an essential substance in the field of organic synthesis. 1,3-BIS(TRIMETHYLSILOXY)-1,3-DIMETHYLDISILOXANE often serves as an excellent silylating agent, used in the production of different types of siloxane bonds. Furthermore, this chemical is known for its resistance to extreme temperature fluctuations, making it widely used in manufacturing processes. However, like other chemicals, it should be handled with care as it poses potential risks to health and the environment. Its specific properties can vary depending on its grade and the manufacturing process, which is why it's important to refer to product-specific safety and handling instructions.

InChI:InChI=1/C8H24O3Si4/c1-12(10-14(3,4)5)9-13(2)11-15(6,7)8/h1-8H3

Upstream product

• 75-54-7 Dichloromethylsilane 
• 110-54-3 hexane 
• 107-46-0 Hexamethyldisiloxane 
• 75-77-4 chloro-trimethyl-silane 

Downstream Products

• 188240-37-1 1,1-diphenyl-3,5-bis-trimethylsiloxy-3,5-dimethylcyclotrisiloxane 
• 108909-17-7 1,1,1,3,5,7,7,7-octamethyltetrasiloxan-3,5-diol 

Relevant articles and documents

Composition for separating mixtures

Therefore, there is provided herein in one specific embodiment a composition comprising: a) at least one silicone surfactant, and where silicone of silicone surfactant (a) has the general structure of: [in-line-formulae]Ma1Mb2Dc1Dd2Te1Tf2Qg; [/in-line-formulae][in-line-formulae]and, [/in-line-formulae][in-line-formulae]2≦(a+b+c+d+e+f+g)≦100; and, [/in-line-formulae] b) a mixture comprising an aqueous phase, a solid filler phase and optionally an oil phase that is substantially insoluble in said aqueous phase.

ZUR SYNTHESE VON SILOXANEN. IV. ACETOLYSE DER KONFIGURATIONSISOMERE DES 1-CHLOR-1,3,5-TRIMETHYL-3,5-BIS(TRIMETHYLSILOXY)CYCLOTRISILOXANS

The acetolysis reaction of 1-chloro-1,3,5-trimethyl-3,5-bis(trimethylsiloxy)cyclotrisiloxane was investigated using 29Si NMR spectroscopy.The three possible configurational isomers, formed in the synthesis, could not be separated.Taking into account the concentration of the three isomers in the mixture, the rate of their acetolysis reactions, the position and the order of the 29Si NMR signals of the chloro- and acetoxycyclotrisiloxane isomers from one set of 29Si NMR data information was obtained on the configuration of the isomers assigned to the NMR signals, the rate constants of the three isomers, and the stereochemistry of the acetolysis reaction.We found that the isomer present in the lowest concentration, showing the largest high field shift and the lowest reactivity has the all-cis configuration, and that the acetolysis reaction proceeds with retention of configuration.