| Identification | More | [Name]
Hexamethylcyclotrisiloxane | [CAS]
541-05-9 | [Synonyms]
HEXAMETHYLCYCLOHEXASILOXANE
HEXAMETHYLCYCLOTRISILOXANE
HEXAMETHYLCYCLOTRISILOXANE D3
2,2,4,4,6,6-Hexamethyl-1,3,5,2,4,6-trioxatrisilinane
CH7260
Cyclotrisiloxane, hexamethyl-
cyclotrisiloxane,hexamethyl-
Dimethylsiloxane cyclic trimer
hexamethylcyclortrisiloxane
hexamethyl-cyclotrisiloxan
CYCLOTRISILOXANE
HEXAMETHYLCYCLOTRISILOXANE TECH. 85%
Hexamethylcyclotrisiloxane,97%
LS 8120
SDK 10
1,1,3,3,5,5-Hexamethylcyclotrisiloxane
2,2,4,4,6,6-Hexamethyl-1,3,5-trioxa-2,4,6-trisilacyclohexane
2,2,4,4,6,6-Hexamethyl-2,4,6-trisila-1,3,5-trioxacyclohexane
2,2,4,4,6,6-Hexamethylcyclohexanetrisiloxane | [EINECS(EC#)]
208-765-4 | [Molecular Formula]
C6H18O3Si3 | [MDL Number]
MFCD00005943 | [Molecular Weight]
222.46 | [MOL File]
541-05-9.mol |
| Chemical Properties | Back Directory | [Appearance]
White crystalline solid | [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 | [Fp ]
95 °F
| [storage temp. ]
Flammables area | [solubility ]
soluble in most organic solvents. | [form ]
solid | [color ]
White to Almost white | [Specific Gravity]
1.02 | [Stability:]
Stable, but moisture sensitive. Incompatible with strong oxidizing agents. Highly flammable. | [Water Solubility ]
may decompose | [Hydrolytic Sensitivity]
1: no significant reaction with aqueous systems | [Sensitive ]
Moisture Sensitive | [BRN ]
1766829 | [LogP]
-0.38-4.4 at 20-25℃ | [CAS DataBase Reference]
541-05-9(CAS DataBase Reference) | [NIST Chemistry Reference]
Hexamethylcyclotrisiloxane(541-05-9) | [EPA Substance Registry System]
541-05-9(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
F,Xi | [Risk Statements ]
R11:Highly Flammable.
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . | [RIDADR ]
UN 1325 4.1/PG 2
| [WGK Germany ]
3
| [TSCA ]
Yes | [HazardClass ]
4.1 | [PackingGroup ]
II | [HS Code ]
29319090 |
| Hazard Information | Back Directory | [Chemical Properties]
White crystalline solid | [Physical properties]
mp 64–64.5 °C; bp 133–134 °C. | [Definition]
ChEBI: Hexamethylcyclotrisiloxane is an organosilicon compound. | [Flammability and Explosibility]
Highlyflammable |
| Questions and Answers (Q&A) | Back Directory | [Uses]
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.
- 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.
- Hexamethylcyclotrisiloxane mainly used for products of methyl vinyl silicone rubber. It’s also the important raw materials for synthesizing other high polymers.
- It may be used as an effective trapping reagent for a variety of short-lived intermediates, including silanones and silyenes.
- Hexamethylcyclotrisiloxane has many unique characteristics.The reaction of It is more active, can be easily and quickly polymerized under lower temperature and simple catalysts.
- may be used to synthesize many kinds of organic silicone products, which have better stability, better insulation properties and better water resistance.
- may be used to synthesize silicon rubber, which may has better elasticity, better abrasive resistance, and better corrosive resistance.
- may be used to synthesize silicone oil, which may has lower freezing point and less surface tension, it is slightly affected by temperature.
- 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.
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