370886

Sigma-Aldrich

1,1,1,3,5,5,5-Heptamethyltrisiloxane

97%

Linear Formula:
(CH3)3SiO2SiHCH3
CAS Number:
Molecular Weight:
222.50
Beilstein/REAXYS Number:
1748455
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22
Pricing and availability is not currently available.

Quality Level

assay

97%

refractive index

n20/D 1.382 (lit.)

bp

142 °C (lit.)

density

0.819 g/mL at 25 °C (lit.)

SMILES string

CSiH(OSi(C)(C)C)OSi(C)(C)C

InChI

1S/C7H22O2Si3/c1-10(8-11(2,3)4)9-12(5,6)7/h10H,1-7H3

InChI key

QNWOFLWXQGHSRH-UHFFFAOYSA-N

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Application

1,1,1,3,5,5,5-Heptamethyltrisiloxane can be used for the aromatic C-H silylation of arenes in the presence of a platinum complex catalyst.
It can also be used as a reagent to synthesize:
  • 3-Octyl-1,1,1,3,5,5,5-heptamethyltrisiloxane, an agricultural adjuvant and sensory performance enhancer used in cosmetic formulations.
  • Isoindigo-based conjugated polymer with siloxane-terminated solubilizing group.
  • Monosiloxy esters with a variety of acids.

Packaging

50, 250 mL in glass bottle

Pictograms

FlameExclamation mark

Signal Word

Danger

Hazard Statements

Target Organs

Respiratory system

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Hazard Codes

Xi

Risk Statement

10-36/37/38

Safety Statement

26-36

RIDADR

UN 1993BF 3 / PGII

WGK Germany

WGK 3

Flash Point(F)

71.6 °F - closed cup

Flash Point(C)

22 °C - closed cup

An efficient Pd-catalyzed route to silyl esters
Chauhan M, et al.
Organic Letters, 2(8), 1027-1029 (2000)
Iron catalysts for selective anti-Markovnikov alkene hydrosilylation using tertiary silanes
Tondreau AM, et al.
Science (New York, N.Y.), 335(6068), 567-570 (2012)
Siloxane-terminated solubilizing side chains: bringing conjugated polymer backbones closer and boosting hole mobilities in thin-film transistors
Mei J, et al.
Journal of the American Chemical Society, 133(50), 20130-20133 (2011)
Kairui Liu et al.
Nature communications, 10(1), 996-996 (2019-03-03)
While numerous single atoms stabilized by support surfaces have been reported, the synthesis of in-situ reduced discrete metal atoms weakly coordinated and stabilized in liquid media is a more challenging goal. We report the genesis of mononuclear electron deficient Pt1(0)...
Platinum-catalyzed aromatic C-H silylation of arenes with 1, 1, 1, 3, 5, 5, 5-Heptamethyltrisiloxane
Murata M, et al.
Chemistry Letters (Jpn), 36(7), 910-911 (2007)

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