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Octamethylcyclotetrasiloxane (D4)

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Identification
Molecular formula
C16H48O8Si8
CAS number
2554-06-5
IUPAC name
2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16-hexadecamethyl-1,3,5,7,9,11,13,15-octaoxa-2,4,6,8,10,12,14,16-octasilacyclohexadecane
State
State

At room temperature, Octamethylcyclotetrasiloxane is a liquid. It is commonly used in various industrial applications, including cosmetics and personal care products, due to its ability to provide smooth application and coverage.

Melting point (Celsius)
17.00
Melting point (Kelvin)
290.15
Boiling point (Celsius)
175.00
Boiling point (Kelvin)
448.15
General information
Molecular weight
592.22g/mol
Molar mass
592.2150g/mol
Density
1.0300g/cm3
Appearence

Octamethylcyclotetrasiloxane commonly appears as a colorless, viscous liquid. It is typically clear and exhibits high density relative to water, but it is water-insoluble and has a distinct silicone-like odor.

Comment on solubility

Solubility of 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16-hexadecamethyl-1,3,5,7,9,11,13,15-octaoxa-2,4,6,8,10,12,14,16-octasilacyclohexadecane

The solubility of chemical compounds can vary widely based on their molecular structure and the presence of functional groups. For the compound 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16-hexadecamethyl-1,3,5,7,9,11,13,15-octaoxa-2,4,6,8,10,12,14,16-octasilacyclohexadecane, the solubility profile is particularly intriguing.

Key Factors Influencing Solubility:

  • Polarity: The presence of multiple ether and siloxane groups may contribute to a level of polarity, influencing solubility in polar solvents.
  • Molecular Weight: With its high molecular weight, this compound could exhibit reduced solubility due to steric hindrance.
  • Solvent Interaction: The solubility in solvents such as water, organic solvents, or even oils can vary greatly, depending on the solvent's characteristics.

In summary, predicting the solubility of such a complex structure can be challenging. As a general statement, compounds of this nature may often exhibit low solubility in water, and might be more compatible with non-polar or low-polarity organic solvents. This is particularly important in practical applications, where understanding solubility is crucial for processes such as extraction, separation, and formulation.

In conduct, while the solubility specifics can vary considerably, it's always pivotal to conduct empirical solubility testing to determine the behavior of such compounds in different environments.

Interesting facts

Interesting Facts about 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16-hexadecamethyl-1,3,5,7,9,11,13,15-octaoxa-2,4,6,8,10,12,14,16-octasilacyclohexadecane

This fascinating chemical compound belongs to a unique class of compounds known as siloxanes, which prominently feature silicon-oxygen bonds. The structure of this compound highlights a highly branched framework characterized by a repeating siloxane unit, contributing to its intriguing behavior and properties. Here are some key facts about this compound:

  • Structure Complexity: With an extensive chain of methyl groups and siloxane links, the compound exemplifies molecular complexity, achieving a high degree of symmetry and stability.
  • Applications: Compounds like this play a significant role in various applications, including sealants and lubricants, due to their remarkable stability and lower surface energy, which makes them excellent for reducing friction and wear.
  • Unique Properties: The incorporation of silicon atoms within the molecular framework can enhance thermal and chemical stability, making this compound useful in higher-temperature environments.
  • Research Potential: Scientists are actively investigating siloxane compounds for new applications, especially in nanotechnology and the development of advanced materials with customized properties.
  • Environmental Considerations: The degradation and impact of such siloxanes in the environment is a research area of growing concern, leading to guidelines for their safe use and disposal.

As a chemistry student studying compounds of this nature, it's crucial to understand the balance between their chemical properties and environmental implications. The ability to harness the advantageous properties of these compounds while mitigating potential ecological impacts is a significant challenge facing modern chemistry.

In summary, the exploration of this compound not only sheds light on its structural intricacies but also paves the way for innovative applications across various fields. As researchers and students interact with such unique compounds, they open the door to new discoveries and advancements in both materials science and environmental chemistry.

Synonyms
HEXADECAMETHYLCYCLOOCTASILOXANE
556-68-3
Cyclooctasiloxane, hexadecamethyl-
UNII-2YAW49T07J
Hexadecamethyl-cyclooctasioxane
2YAW49T07J
CYCLOMETHICONE 8
EINECS 209-137-2
DTXSID0060305
CHEBI:87984
CYCLOOCTASILOXANE, 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16-HEXADECAMETHYL-
DTXCID7041916
209-137-2
xkjmjyzfawyrel-uhfffaoysa-n
hexadecamethyl-cyclooctasiloxane
2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16-hexadecamethyl-1,3,5,7,9,11,13,15-octaoxa-2,4,6,8,10,12,14,16-octasilacyclohexadecane
2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16-Hexadecamethyl-1,3,5,7,9,11,13,15-octaoxa-2,4,6,8,10,12,14,16-octasilacyclohexadecane;
MFCD30725759
Hexadecamethylcycloctasiloxane
SCHEMBL450212
AKOS030227996
CYCLOOCTASILOXANE, HEXADECAMETHYL
LS-14549
H1288
NS00043041
A10827
Q27160001
2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16-Hexadecamethylcyclooctasiloxane #