structure of 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane

1,1,3,3,5,5,7,7-Octamethyltetrasiloxane

CAS No.: 1000-05-1
M. Wt: 282.632
M. Fa: C8H26O3Si4
InChI Key: ILBWBNOBGCYGSU-UHFFFAOYSA-N
Appearance: Colorless Liquid

Names and Identifiers of 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane

CAS Number

1000-05-1

EC Number

213-669-0

MDL Number

MFCD00039789

InChI

InChI=1S/C8H24O3Si4/c1-12(2)9-14(5,6)11-15(7,8)10-13(3)4/h1-8H3

InChIKey

ILBWBNOBGCYGSU-UHFFFAOYSA-N

Canonical SMILES

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

UNII

YB15PH50RH

UNSPSC Code

12352100

Physical and chemical properties of 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane

Boiling Point

205.1±23.0 °C at 760 mmHg

Density

0.863

Exact Mass

282.095886

Flash Point

77.8±22.6 °C

Index of Refraction

1.3875

LogP

7.69

Melting Point

<0ºC

Molecular Formula

C8H26O3Si4

Molecular Weight

282.632

PSA

27.69000

Storage condition

2~8℃

Vapour Pressure

0.4±0.4 mmHg at 25°C

Safety Information of 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane

Pictograms

Signal Word

 Warning

Safety Data Sheet
Supports customized editing of SDS information and downloading in PDF documents.

Applications of 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane

This compound finds numerous applications across various industries due to its unique properties:

  • Coatings: It is extensively used in creating hydrophobic coatings for glass and metal surfaces.
  • Sealants: Its excellent adhesion properties make it suitable for use in sealants.
  • Polymers: It serves as a building block in synthesizing siloxane-based polymers and oligomers.
  • Textiles: Used to impart water-repellent properties to fabrics.

Interaction Studies of 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane

Interaction studies have shown that 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane interacts predominantly with surface silanols on various materials. The unhydrolyzed chlorines in the compound react chemically with these silanols to form stable siloxane bonds. This reaction not only enhances surface properties but also contributes to the durability of coatings applied using this compound.

Physical sample testing spectrum (NMR) of 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane

Physical sample testing spectrum (NMR) of 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane

Retrosynthesis analysis of 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane

  • Route#1

    Cas:2474-02-4
    Cas:1000-05-1

  • Route#2

    Cas:109-99-9
    Cas:2474-02-4
    Cas:1000-05-1

  • Route#3

    Cas:3277-26-7
    Cas:541-05-9
    Cas:1000-05-1