Methyl phenyl silicone oil
[CAS# 63148-58-3]

Identification

• Classification: Organic raw materials >> Organosilicon compound
• Name: Methyl phenyl silicone oil
• Synonyms: Silicone oil (high temperature)
• Molecular Formula: (C₇H₈OSi)_n
• CAS Registry Number: 63148-58-3
• EC Number: 613-153-9

Properties

• Density: 0.93 g/mL (25 °C)
• Refractive index: 1.403
• Boiling point: >140 °C(0.002 mmHg)
• Flash point: 101.1 °C (closed cup)

Discovery and Applications

Methyl phenyl silicone oil is a type of organosilicon compound that is composed of a polymer backbone made from silicon-oxygen (Si-O) units, with methyl and phenyl groups attached to the silicon atoms. It is a variation of silicone oil, which is well known for its unique chemical structure and versatile properties. The discovery of silicone oils can be traced back to the early 20th century when researchers like Frederick Kipping began studying silanes and siloxanes. Methyl phenyl silicone oil, a specialized form of silicone oil, incorporates both methyl and phenyl groups, enhancing its range of applications compared to standard silicone oils.

The synthesis of methyl phenyl silicone oil typically involves the polymerization of siloxane monomers, specifically the reaction of methylchlorosilane or phenylchlorosilane with silicon compounds. The incorporation of both methyl and phenyl groups into the polymer structure imparts unique properties to the resulting oil. Methyl groups are hydrophobic and help to reduce surface tension, while phenyl groups provide enhanced thermal stability and improved resistance to chemical degradation. The combination of these groups in methyl phenyl silicone oil gives it an ideal balance of flexibility, chemical resistance, and stability.

Methyl phenyl silicone oil is widely used in a variety of applications due to its unique properties. One of the most important uses is as a lubricant in industrial machinery. Its ability to withstand high temperatures and resist degradation makes it an excellent choice for high-performance lubricants, especially in systems that are exposed to extreme conditions. The oil reduces friction between moving parts, leading to smoother operation and less wear and tear on equipment. It is commonly used in applications such as automotive engines, compressors, and precision machinery.

In addition to its use as a lubricant, methyl phenyl silicone oil is also employed as a release agent in various manufacturing processes. The oil’s low surface tension and hydrophobic nature make it effective at preventing materials from sticking to molds and equipment, thereby improving the efficiency of production lines. It is commonly used in industries such as plastics, rubber, and food packaging, where ease of release is critical for maintaining product quality and reducing production time.

Methyl phenyl silicone oil is also used in the cosmetics and personal care industries. It is often included in formulations for hair care products, such as shampoos, conditioners, and styling products, due to its ability to provide a smooth, silky finish without leaving a greasy residue. The oil's ability to form a protective layer on the skin and hair also helps to retain moisture, making it beneficial for moisturizing formulations. In addition, it is used in skin care products where its emollient properties help to soften and smooth the skin, providing a non-greasy, long-lasting effect.

The pharmaceutical industry also makes use of methyl phenyl silicone oil in drug delivery systems. Its biocompatibility and chemical stability make it an ideal material for formulating topical medications, particularly in the form of creams and ointments. The oil can serve as a carrier for active ingredients, helping to improve the absorption and stability of drugs when applied to the skin. It is also used in some medical devices, such as catheters, where its lubricating properties reduce friction and enhance patient comfort.

In addition to these applications, methyl phenyl silicone oil is used in various specialty products, including hydraulic fluids, damping fluids, and coatings. Its chemical resistance and thermal stability make it an ideal candidate for products that must perform in harsh environments or under extreme conditions. The oil’s versatility also extends to electronics, where it is used as a dielectric fluid in capacitors and other components that require insulation and heat dissipation.

In conclusion, methyl phenyl silicone oil is a highly versatile compound with a wide range of applications across multiple industries. Its unique combination of methyl and phenyl groups provides an optimal balance of properties such as chemical resistance, stability, lubricity, and hydrophobicity. As research and development in the field of organosilicon compounds continue, methyl phenyl silicone oil is expected to remain an important material in the development of advanced products and technologies.

References

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