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Octamethylcyclotetrasiloxane

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Identification
Molecular formula
C8H24O4Si4
CAS number
556-67-2
IUPAC name
2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18-octadecamethyl-1,3,5,7,9,11,13,15,17-nonaoxa-2,4,6,8,10,12,14,16,18-nonasilacyclooctadecane
State
State

At room temperature, octamethylcyclotetrasiloxane is in a liquid state. Despite being a silicon compound, it maintains a low level of toxicity and high level of stability in its liquid form.

Melting point (Celsius)
17.00
Melting point (Kelvin)
290.15
Boiling point (Celsius)
175.00
Boiling point (Kelvin)
448.15
General information
Molecular weight
296.62g/mol
Molar mass
296.6170g/mol
Density
0.9738g/cm3
Appearence

Octamethylcyclotetrasiloxane is a clear and colorless liquid. It can also exhibit a slight bluish sheen due to its molecular structure, which is a common trait in siloxanes. This compound is often noted for its low viscosity and volatility.

Comment on solubility

Solubility of 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18-octadecamethyl-1,3,5,7,9,11,13,15,17-nonaoxa-2,4,6,8,10,12,14,16,18-nonasilacyclooctadecane

The solubility of 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18-octadecamethyl-1,3,5,7,9,11,13,15,17-nonaoxa-2,4,6,8,10,12,14,16,18-nonasilacyclooctadecane (commonly referred to as a siloxane compound) can be quite intriguing due to its complex molecular structure. This compound features a significant number of both methyl and ether linkages, affecting its interactions with solvents. Key points regarding its solubility include:

  • Polarity: Due to the presence of numerous oxygen atoms, the compound exhibits some polar characteristics; however, the vast number of alkyl groups may impart hydrophobic qualities, reducing its solubility in polar solvents.
  • Solvent Compatibility: It is likely to be soluble in organic solvents such as:
    • Hexane
    • Toluene
    • Chloroform
  • Water Solubility: Given its large molecular size and primarily hydrocarbon nature, 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18-octadecamethyl-1,3,5,7,9,11,13,15,17-nonaoxa-2,4,6,8,10,12,14,16,18-nonasilacyclooctadecane is expected to have very limited solubility in water.

In conclusion, while certain conditions may allow for some degree of solubility, the overall characteristics suggest that it is primarily suited for use in nonpolar environments and solvents.

Interesting facts

Interesting Facts about 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18-octadecamethyl-1,3,5,7,9,11,13,15,17-nonaoxa-2,4,6,8,10,12,14,16,18-nonasilacyclooctadecane

This fascinating compound exhibits a unique structure that combines both organic and inorganic characteristics. Here are some intriguing facts about it:

  • Complex Composition: The compound consists of a long chain of methyl groups alongside a cyclic structure containing siloxane and ether linkages, demonstrating a rich molecular architecture.
  • Silicon-Containing Compound: With its incorporation of silicon, this compound is an example of a siloxane, which often possesses unique thermal and chemical stability properties.
  • Potential Applications: Due to its extensive chain length and functional groups, it has promising uses in:
    • Lubricants
    • Surface coatings
    • Materials science
  • Non-toxic and Biocompatible: This class of compounds is often valued for being non-toxic, leading to its exploration in biomedical applications like drug delivery systems.
  • Research Interest: Scientists are keen on studying this compound for its potential use in nanotechnology and polymer synthesis, making it a subject of research in advanced materials development.

Overall, 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18-octadecamethyl-1,3,5,7,9,11,13,15,17-nonaoxa-2,4,6,8,10,12,14,16,18-nonasilacyclooctadecane showcases the incredible diversity of chemical compounds, particularly in the realm of complex organosilicon chemistry.

Synonyms
OCTADECAMETHYLCYCLONONASILOXANE
556-71-8
Cyclononasiloxane, octadecamethyl-
UNII-28W8JYZ0C6
Octadeamethyl-cyclononasiloxane
28W8JYZ0C6
CYCLOMETHICONE 9
DTXSID5060308
OCTAMETHYLCYCLONONASILOXANE
CYCLONONASILOXANE, 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18-OCTADECAMETHYL-
DTXCID2041919
834-175-7
isxogolheghgqf-uhfffaoysa-n
Octadecamethylnonasiloxane
octadecamethyl-cyclononasiloxane
2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18-octadecamethyl-1,3,5,7,9,11,13,15,17-nonaoxa-2,4,6,8,10,12,14,16,18-nonasilacyclooctadecane
Octadecamethylcyclononasiloxane;2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18-Octadecamethyl-Cyclononasiloxane
MFCD30533789
Ctadecamethylcyclononasiloxane
SCHEMBL9009704
CYCLONONASILOXANE, OCTADECAMETHYL
FO166641
NS00122350
O0425
T72613
Q27254355
2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18-Octadecamethylcyclononasiloxane #