Skip to Content
Merck
CN

370886

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

97%

Synonym(s):

2,2,4,6,6-Pentamethyl-3,5-dioxa-2,4,6-trisilaheptane, 2-Hydro-1,1,1,2,3,3,3-heptamethyltrisiloxane, Bis(trimethylsiloxy)methylsilane, Heptamethylhydrotrisiloxane, Methylbis(trimethylsiloxy)silane

Sign In to View Organizational & Contract Pricing.

Select a Size

About This Item

Linear Formula:
[(CH3)3SiO]2SiHCH3
CAS Number:
1873-88-7
Molecular Weight:
222.50
UNSPSC Code:
12352103
NACRES:
NA.22
PubChem Substance ID:
24863086
EC Number:
217-496-1
Beilstein/REAXYS Number:
1748455
MDL number:
MFCD00048000

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

InChI key

QNWOFLWXQGHSRH-UHFFFAOYSA-N

InChI

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

SMILES string

C[SiH](O[Si](C)(C)C)O[Si](C)(C)C

assay

97%

refractive index

n20/D 1.382 (lit.)

bp

142 °C (lit.)

density

0.819 g/mL at 25 °C (lit.)

Quality Level

100

Related Categories

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.

pictograms

FlameExclamation mark
GHS02,GHS07

signalword

Danger

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

3 - Flammable liquids

wgk

WGK 3

flash_point_f

71.6 °F - closed cup

flash_point_c

22 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Regulatory Information

危险化学品
This item has

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
12311AD
14718HC
10204KB
07526BC
07108LU

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

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)
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)
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)
An efficient Pd-catalyzed route to silyl esters
Chauhan M, et al.
Organic Letters, 2(8), 1027-1029 (2000)
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)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service