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

Basic Information

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CAS Number

16066-09-4

Molecular Formula

C8H26O3Si4

Molecular Weight

282.64 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Hydrocarbons

Basic Physical Properties

Melting Point

<0°C

Boiling Point

177°C

Flash Point

78 ºC

Refractive Index

1.3860

SMILES

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

InChI

InChI=1S/C8H26O3Si4/c1-12(10-14(3,4)5)9-13(2)11-15(6,7)8/h12-13H,1-8H3

InChIKey

LBPUHXCOWXUVCE-UHFFFAOYSA-N

LogP

2.4066

Topological Polar Surface Area

27.69 Å²

Hydrogen Bond Donor/Acceptor

0 / 3

Complexity

167

Safety Information

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Hazard Statement

H227 Combustible liquid
Flammable liquids

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

Sensitiveness

Moisture Sensitive

Synonyms & References

English

3H,5H-Octamethyltetrasiloxane(1,3-Bis(trimethylsiloxy)-1,3-dimethyldisiloxane)
EINECS 240-209-6
3H,5H-Ctamethyltetrasiloxane
1,1,1,3,5,7,7,7-octamethyl-tetrasiloxane
MFCD00053664
methyl-[methyl(trimethylsilyloxy)-$l^{3}
Tetrasiloxane, 1,1,1,3,5,7,7,7-octamethyl-
1,1,1,3,5,7,7,7-Octamethyltetrasiloxane
Tetrasiloxane, 1,1,1,3,5,7,7,7-octamethyl-,
2,2,4,6,8,8-HEXAMETHYL-3,5,7-TRIOXA-2,4,6,8-TETRASILANONANE
1,1,1,3,5,7,7,7-Octamethyltetrasiloxane, technical, >=95% (GC)
O0397
SCHEMBL510967
OHSYWAVRSCQMHG-UHFFFAOYSA-N
1,1,1,3,5,7,7,7-Ctamethyltetrasiloxane
DTXSID00871252
1,3-BIS(TRIMETHYLSILOXY)-1,3-DIMETHYLDISILOXANE
Bis(trimethylsiloxy)dimethyldisiloxane
CS-0213526
AKOS015899856
AS-65401
FT-0606582
16066-09-4
A883192
methyl-[methyl(trimethylsilyloxy)-$l^{3-silanyl]oxy-trimethylsilyloxysilicon
s12425
3H,5H-Octamethyltetrasiloxane
1,3-Bis-(trimethylsiloxy)-1,3-dimethyldisiloxane
1,3-Bis(trimethylsiloxy)-1,3-dimethyldisiloxane
bis(Trimethylsiloxy)dimethyldisiloxane
1,1,1,3,5,7,7,7-octamethyl-tetrasiloxan

MDL Number

MFCD00053664

Customs Code

2942000000

FAQ

What are the physical and chemical properties of 1,1,1,3,5,7,7,7-Octamethyltetrasiloxane (CAS: 16066-09-4)?

1,1,1,3,5,7,7,7-Octamethyltetrasiloxane (CAS: 16066-09-4) is a colorless, viscous liquid with a high molecular weight. It has a low vapor pressure and is poorly soluble in water but soluble in organic solvents. Chemically, it is stable but can react with strong acids or bases. It is commonly used in silicone-based products and has a wide range of applications due to its low volatility and stability.

How is 1,1,1,3,5,7,7,7-Octamethyltetrasiloxane (CAS: 16066-09-4) typically synthesized?

1,1,1,3,5,7,7,7-Octamethyltetrasiloxane (CAS: 16066-09-4) is typically synthesized through the condensation of tetramethoxysilane with dimethyldichlorosilane in the presence of a catalyst such as potassium hydroxide. The synthesis yields a product with high molecular weight and selectivity, ensuring purity and high yield in industrial processes.

What industries use 1,1,1,3,5,7,7,7-Octamethyltetrasiloxane (CAS: 16066-09-4)?

1,1,1,3,5,7,7,7-Octamethyltetrasiloxane (CAS: 16066-09-4) is widely used in the polymer industry for the production of silicone rubbers and sealants. It also finds applications in the pharmaceutical industry for drug delivery systems, in electronics for semiconductor manufacturing, and in sensors for gas detection and measurement.

What precautions should be taken when handling 1,1,1,3,5,7,7,7-Octamethyltetrasiloxane (CAS: 16066-09-4)?

When handling 1,1,1,3,5,7,7,7-Octamethyltetrasiloxane (CAS: 16066-09-4), it is important to use personal protective equipment (PPE) such as gloves and safety goggles. This compound should be stored in a cool, dry place away from heat sources and incompatible materials. In case of spill, it should be handled according to the safety data sheet (SDS) and with the use of a fume hood to prevent inhalation. Always consult the SDS for detailed safety information.