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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
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vapor density

>1 (vs air)

Quality Segment

grade

puriss.

assay

≥98.5% (GC)

form

liquid

refractive index

n20/D 1.377

bp

101 °C (lit.)

mp

−59 °C (lit.)

density

0.764 g/mL at 20 °C (lit.)

SMILES string

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

InChI

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

InChI key

UQEAIHBTYFGYIE-UHFFFAOYSA-N

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.

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.

Other Notes

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

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Pictograms

FlameEnvironment
GHS02,GHS09

Signal Word

Danger

Hazard Codes

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 (personal protective equipment)

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

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