Project Description

Chemical NameHexamethylcyclotrisiloxane
CAS No.541-05-9
Molecular Formula:C6H18O3Si3
Molecular Weight:222.46
Appearance Powder
Melting point50-64 °C(lit.)
Flash point95 °F
Boiling point134 °C(lit.)
Storage temp.Flammables area



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.

Contact us for Hexamethylcyclotrisiloxane MSDS -Material Safety Data Sheet and Hexamethylcyclotrisiloxane CAS 541-05-9 COA-Certificate of Analysis, Product Data Sheet – in PDF Document.

Safety Information:



RIDADR:  UN 1325 4.1/PG 2

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