235687

Sigma-Aldrich

Hexamethylcyclotrisiloxane

98%

Synonym(s):
Cyclic (D3) permethylsiloxane
Empirical Formula (Hill Notation):
C6H18O3Si3
CAS Number:
Molecular Weight:
222.46
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22
Pricing and availability is not currently available.

vapor density

1 (vs air)

Quality Level

assay

98%

bp

134 °C (lit.)

mp

50-64 °C (lit.)

SMILES string

C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O1

InChI

1S/C6H18O3Si3/c1-10(2)7-11(3,4)9-12(5,6)8-10/h1-6H3

InChI key

HTDJPCNNEPUOOQ-UHFFFAOYSA-N

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Application

Hexamethylcyclotrisiloxane (D3) can be used in the synthesis of:
  • Polysiloxanes by anionic ring-opening polymerization.        
  • Thin films by pulsed- plasma-enhanced chemical vapor deposition (PECVD) for the application of insulating biomaterials.
  •  Dimethoxydimethylsilane by treating with dimethyl carbonate via deoligomerization using alkali metal hydroxide catalyst.

Packaging

25, 100 g in glass bottle

Pictograms

Flame

Signal Word

Danger

Hazard Statements

Precautionary Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

UN1325 - class 4.1 - PG 2 - Flammable solids, organic, n.o.s., HI: all

WGK Germany

WGK 3

Flash Point(F)

95.0 °F - closed cup

Flash Point(C)

35 °C - closed cup

Synthesis of branched polysiloxanes with controlled branching and functionalization by anionic ring-opening polymerization.
Chojnowski J, et al.
Macromolecules, 36(11), 3890-3897 (2003)
Robust block copolymer mask for nanopatterning polymer films.
Chao C C, et al.
ACS Nano, 4(4), 2088-2094 (2010)
Elisabetta Finocchio et al.
Chemosphere, 72(11), 1659-1663 (2008-07-08)
The decomposition of hexamethylcyclotrisiloxane (HMCTS) has been studied at room temperature and in the range 473-673 K over the surface of basic (CaO, MgO) and acidic oxides (Al(2)O(3), SiO(2)). Alumina allows the complete removal of HMCTS from synthetic biogases at...
Deoligomerization of siloxanes with dimethyl carbonate over solid-base catalysts
Okamoto M, et al.
Chemical Communications (Cambridge, England), (18), 1838-1839 (2001)
A S Chawla
Biomaterials, 2(2), 83-88 (1981-04-01)
Silicone coated Celgard-2400 and Silastic membranes were prepared by plasma polymerization of hexamethylcyclotrisiloxane. The adhesion of canine platelets and leucocytes was tested by passing whole blood from the anaesthetized mongrel dog in an ex-vivo shunt system. The silicone control Celgard...
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