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HomeProduct name listHexamethylcyclotrisiloxane

Hexamethylcyclotrisiloxane

Synonym(s):Cyclic (D3) permethylsiloxane

  • CAS NO.:541-05-9
  • Empirical Formula: C6H18O3Si3
  • Molecular Weight: 222.46
  • MDL number: MFCD00005943
  • EINECS: 208-765-4
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-10-25 23:13:37
Hexamethylcyclotrisiloxane Structural

What is Hexamethylcyclotrisiloxane?

Chemical properties

White crystalline solid

Physical properties

mp 64–64.5 °C; bp 133–134 °C.

The Uses of Hexamethylcyclotrisiloxane

Hexamethylcyclotrisiloxane, is the simplest member of a series of cyclic oligodimethylsiloxanes, primarily used as synthetic equivalents for the reactive interme- diate dimethylsilanone. It is one of the main raw materials for silicone products. It is widely used in aviation, military industry, medicine and petrochemicals etc.

  1. Hexamethylcyclotrisiloxane undergoes ring-opening anionic polymerization reactions, suggesting use in polymer synthesis. It is also suggested for the treatment of powders and fillers to render them hydrophobic.
  2. Hexamethylcyclotrisiloxane mainly used for products of methyl vinyl silicone rubber. It’s also the important raw materials for synthesizing other high polymers.
  3. It may be used as an effective trapping reagent for a variety of short-lived intermediates, including silanones and silyenes.
  4. Hexamethylcyclotrisiloxane has many unique characteristics.The reaction of It is more active, can be easily and quickly polymerized under lower temperature and simple catalysts.
  5. may be used to synthesize many kinds of organic silicone products, which have better stability, better insulation properties and better water resistance.
  6. may be used to synthesize silicon rubber, which may has better elasticity, better abrasive resistance, and better corrosive resistance.
  7. may be used to synthesize silicone oil, which may has lower freezing point and less surface tension, it is slightly affected by temperature.
  8. Hexamethylcyclotrisiloxane is flammable. Use and store with all precautions required for Flammable Materials. Care should be exercised in handling GP-685 to prevent contact with skin or eyes. Wear safety glasses with side shields and rubber gloves when handling.

The Uses of Hexamethylcyclotrisiloxane

Hexamethylcyclotrisiloxane can be used as reagent for the preparation of dimethylsilanols, trapping of insitu- generated silanones, silylenes, silyl azides, silanethiones, and derivatives. Hexamethylcyclotrisiloxane, (D3) is the simplest member of a series of cyclic oligodimethylsiloxanes, primarily used as synthetic equivalents for the reactive intermediate dimethylsilanone. This characteristic is responsible for its extensive application in polymer chemistry. Hexamethylcyclotrisiloxane has also been exploited as an efficient trapping reagent for a variety of shortlived intermediates, including silanones and silyenes. The ability of D3 to intercept these reactive species has been attributed to its rigid, planar structure,8 and the resultant release of strain from ring expansion.

The Uses of Hexamethylcyclotrisiloxane

Hexamethylcyclotrisiloxane is used in the preparation of graft polymers and block polymers. It is also a useful biochemical for proteomics research and also acts as an intermediate in organic reactions.

What are the applications of Application

Hexamethylcyclotrisiloxane is a useful biochemical for proteomics research

Definition

ChEBI: Hexamethylcyclotrisiloxane is an organosilicon compound.

Flammability and Explosibility

Highly flammable

Properties of Hexamethylcyclotrisiloxane

Melting point: 50-64 °C (lit.)
Boiling point: 134 °C (lit.)
Density  1.02
vapor density  1 (vs air)
vapor pressure  0.014-671Pa at 24.85-25℃
RTECS  GZ4705000
Flash point: 95 °F
storage temp.  Inert atmosphere,Room Temperature
solubility  soluble in most organic solvents.
form  solid
color  White to Almost white
Specific Gravity 1.02
Water Solubility  may decompose
Sensitive  Moisture Sensitive
Hydrolytic Sensitivity 1: no significant reaction with aqueous systems
BRN  1766829
Stability: Stable, but moisture sensitive. Incompatible with strong oxidizing agents. Highly flammable.
CAS DataBase Reference 541-05-9(CAS DataBase Reference)
NIST Chemistry Reference Hexamethylcyclotrisiloxane(541-05-9)
EPA Substance Registry System Hexamethylcyclotrisiloxane (541-05-9)

Safety information for Hexamethylcyclotrisiloxane

Signal word Danger
Pictogram(s)
ghs
Flame
Flammables
GHS02
GHS Hazard Statements H228:Flammable solids
Precautionary Statement Codes P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P240:Ground/bond container and receiving equipment.
P241:Use explosion-proof electrical/ventilating/lighting/…/equipment.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P370+P378:In case of fire: Use … for extinction.

Computed Descriptors for Hexamethylcyclotrisiloxane

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