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Merck
CN

52630

Hexamethyldisiloxane

puriss., ≥98.5% (GC)

Synonym(s):

HMDSO

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About This Item

Linear Formula:
(CH3)3SiOSi(CH3)3
CAS Number:
107-46-0
Molecular Weight:
162.38
UNSPSC Code:
12352103
NACRES:
NA.22
PubChem Substance ID:
329757863
EC Number:
203-492-7
Beilstein/REAXYS Number:
1736258
MDL number:
MFCD00008265

Key Documents

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Product Name

Hexamethyldisiloxane, puriss., ≥98.5% (GC)

InChI key

UQEAIHBTYFGYIE-UHFFFAOYSA-N

InChI

1S/C6H18OSi2/c1-8(2,3)7-9(4,5)6/h1-6H3

SMILES string

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

vapor density

>1 (vs air)

grade

puriss.

assay

≥98.5% (GC)

form

liquid

refractive index

n20/D 1.377 (lit.)
n20/D 1.377

bp

101 °C (lit.)

mp

−59 °C (lit.)

density

0.764 g/mL at 20 °C (lit.)

Quality Level

200

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Application

Hexamethyldisiloxane is used:
  • As a modifying agent in the presence of ethanol/n-hexane solution for the preparation of hydrophobic and hydrophilic sodium silicate-based silica xerogels.
  • To form the dielectric layers in the MIM(metal-insulator-metal) structure that is consisting of graphene quantum dots(GQDs) to prepare two-terminal NVM (non-volatile-memory) devices.

Features and Benefits

Hexamethyldisiloxanehas high thermal stability.

General description

HMDSO(hexamethyldisiloxane) is an organosilicon compound. It is a non-toxic, environmentally friendly monomer. It can be used as a precursor to synthesize organosilicon thin films. It serves as a silylating agent for carboxylic acids and alcohols. Additionally, it is used in the preparation of aroyl chlorides. HMDSO is commonly used as a water-repellent.

Other Notes

For a facile silylation of carboxylic acids; As chloride anion acceptor in the synthesis of sulphinic esters

pictograms

FlameEnvironment
GHS02,GHS09

signalword

Danger

hcodes

H225,H410

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - Flam. Liq. 2

Storage Class

3 - Flammable liquids

wgk

WGK 2

flash_point_f

21.2 °F - closed cup

flash_point_c

-6 °C - closed cup

ppe

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

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
BCCP2265
BCCN6141
BCCN3105
BCCC5131
BCCM7296

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Pavel Solař et al.
Scientific reports, 7(1), 8514-8514 (2017-08-19)
Nanoparticles composed of multiple silver cores and a plasma polymer shell (multicore@shell) were prepared in a single step with a gas aggregation cluster source operating with Ar/hexamethyldisiloxane mixtures and optionally oxygen. The size distribution of the metal inclusions as well
J. Drabowicz
Chemistry Letters (Jpn), 1753-1753 (1981)
J. Heberle et al.
Silylating Agents, 2nd ed. (1995)
H. Matsumoto et al.
Chemistry Letters (Jpn), 1475-1475 (1980)
Edyta Słupek et al.
Materials (Basel, Switzerland), 14(2) (2021-01-10)
The paper presents the screening of 20 deep eutectic solvents (DESs) composed of tetrapropylammonium bromide (TPABr) and glycols in various molar ratios, and 6 conventional solvents as absorbents for removal of siloxanes from model biogas stream. The screening was achieved
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