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DESCRIPTION
Phenyl Trimethicone is a type of silicone-based compound widely used in personal care and cosmetic products due to its excellent emollient and conditioning properties.
Phenyl Trimethicone is derived from phenyl groups and trimethylsiloxy groups, giving it a unique set of characteristics that make it beneficial in various formulations.
Cas Number
2116-84-9
SYNONYMS
Phenylmethylsiloxane,Trimethylsiloxyphenyl Dimethicone,Trimethylsiloxyphenylsilicone,Polysilicone-5,Phenyl,Polysiloxane,Polyphenylmethylsiloxane
Introduction
Phenyl Trimethicone is a type of silicone compound widely used in cosmetics, pharmaceuticals, and various industrial applications.
Phenyl Trimethicone belongs to the group of organosilicon compounds, which are characterized by silicon-oxygen bonds and are widely known for their versatility and stability.
Phenyl Trimethicone is often used for its unique ability to enhance the performance of personal care products by providing a smooth, non-greasy finish and improving the aesthetic appearance of products.
Phenyl Trimethicone is part of a larger family of silicones, such as dimethicone and cyclopentasiloxane, but with a slightly modified chemical structure that imparts specific benefits, particularly in terms of shine, spreadability, and skin feel.
Key Points:
Chemical Class: Silicone
Common Uses: Hair care, skin care, industrial applications
Benefits: Enhances smoothness, shine, water resistance, and spreadability
Chemical Composition and Structure
Phenyl Trimethicone is chemically known as a trimethylsiloxy-phenyl-silane compound.
Its chemical structure consists of a silicon atom bonded to three methyl groups (–CH3) and one phenyl group (–C6H5).
The general formula for Phenyl Trimethicone is C9H12O2Si, which reflects its makeup of carbon, hydrogen, oxygen, and silicon atoms.
The silicon-oxygen backbone of the molecule, characteristic of silicones, gives Phenyl Trimethicone its unique properties such as low surface tension and resistance to water and heat.
The phenyl group in the structure enhances the compound’s interaction with organic materials and provides the compound with a higher refractive index, contributing to its shiny, glossy finish in formulations.
Functional Groups:
Siloxy group (Si–O): Imparts smoothness and low surface energy.
Methyl group (–CH3): Provides stability and low volatility.
Phenyl group (–C6H5): Contributes to shine, gloss, and improved spreading properties.
Comparison with Other Silicones:
Phenyl Trimethicone differs from other common silicones like Dimethicone by its aromatic ring (phenyl group), which affects its physical properties like viscosity and refractive index.
Physical and Chemical Properties
Phenyl Trimethicone is a colorless to pale yellow liquid that is highly stable and resistant to oxidation and chemical degradation.
Some of the key physical and chemical properties include:
Viscosity: Typically, Phenyl Trimethicone is a low-viscosity liquid, although it can be modified to suit different formulations.
Solubility: It is soluble in oils and organic solvents but is largely insoluble in water, which enhances its use in water-resistant formulations.
Refractive Index: Higher than typical silicones due to the presence of the phenyl group, which contributes to the product’s glossy, shiny finish on skin or hair.
Thermal Stability: Highly stable at both high and low temperatures, making it useful in formulations that require thermal resistance.
Hydrophobicity: Exhibits a strong resistance to water, contributing to water-repellent properties in products such as sunscreens, hair care, and skin care formulations.
Low Surface Tension: Provides a smooth, non-greasy application and leaves a silky finish.
Synthesis and Manufacturing Process
The synthesis of Phenyl Trimethicone typically involves the reaction of trimethylsiloxy-terminated silanes with phenylsilane derivatives.
This process is carried out through a hydrosilylation reaction, where a silicon-hydride compound reacts with a compound containing a double bond (usually phenylmethylsilane or similar compounds).
Key Steps:
Starting materials: Phenyl trimethoxysilane and a hydrosilane are commonly used as reactants.
Catalysis: The reaction is catalyzed by platinum-based catalysts.
Polymerization: The reaction leads to the formation of longer siloxane chains that are terminated with phenyl groups.
Purification: The product is then purified through distillation or other separation methods to remove any residual impurities and byproducts.
Industrial Considerations:
The process can be fine-tuned to control the molecular weight and viscosity of the final product.
As with most silicone-based compounds, the manufacturing process emphasizes safety due to the use of volatile chemicals and high temperatures.
Applications in the Cosmetic Industry
Phenyl Trimethicone is widely utilized in various cosmetic and personal care products due to its ability to improve sensory properties and product performance.
Its main uses include:
Hair Care: In shampoos, conditioners, and styling products, Phenyl Trimethicone provides excellent shine and helps to smooth the hair cuticle, making hair appear healthier and more manageable.
It also acts as a conditioning agent that helps prevent frizz and adds a non-greasy, shiny finish.
Skin Care: Used in lotions, creams, and moisturizers, Phenyl Trimethicone enhances the spreadability of products.
It leaves the skin feeling smooth without an oily residue, which is highly desirable in facial products.
It also offers some degree of water resistance, making it suitable for use in sunscreens and other outdoor skin care products.
Makeup: In foundations, concealers, and other color cosmetics, Phenyl Trimethicone contributes to a smooth application and adds a polished, dewy look to the skin.
Its ability to act as a silicone ester helps create long-lasting formulations that don’t fade throughout the day.
Benefits:
Improves product spreadability.
Enhances shine without greasiness.
Provides a smooth feel to skin and hair.
Adds water-resistance and durability to formulations.
Applications in Other Industries
While Phenyl Trimethicone is most commonly associated with cosmetics, it also plays a role in other industrial sectors:
Pharmaceuticals: Phenyl Trimethicone is used as an excipient in certain drug formulations, particularly in topical medications, due to its smooth application properties and compatibility with other ingredients.
Industrial Lubricants: In mechanical and industrial settings, Phenyl Trimethicone acts as a lubricant or anti-foaming agent.
Its ability to create a non-stick, smooth surface is beneficial in machinery, especially in conditions where resistance to water or extreme temperatures is required.
Electronics and Automotive: Used as a protective coating in electronics and automotive industries, it serves as a water-repellent barrier for sensitive components, offering protection against moisture and enhancing the longevity of products exposed to harsh environments.
Environmental Impact and Sustainability
One of the growing concerns with silicone-based compounds is their environmental impact, particularly their biodegradability.
Phenyl Trimethicone is not readily biodegradable, which means it may persist in the environment for extended periods.
However, due to its non-toxic nature, it is generally considered to have a minimal direct effect on ecosystems.
Sustainability efforts in the cosmetic industry are focusing on sourcing raw materials for silicones more responsibly and working towards creating biodegradable alternatives.
Market Trends and Consumer Demand
Phenyl Trimethicone continues to see strong demand in the cosmetics and personal care industries, especially in the premium segment, where consumers prioritize performance and aesthetics.
The rise of clean beauty and sustainable packaging is also influencing the demand for eco-friendly silicone alternatives.
Growing Trends: The increasing demand for anti-aging products, sun protection, and hair care solutions is driving the market for Phenyl Trimethicone-based formulations.
Consumer Preferences: Consumers continue to favor products that provide smooth, non-greasy finishes while being effective and easy to use.
Future Prospects and Innovations
Looking ahead, Phenyl Trimethicone is expected to evolve with the development of new formulations and applications.
As sustainability becomes an increasingly important issue, there will likely be a push towards creating biodegradable versions or reducing environmental impact.
Additionally, innovation in smart delivery systems for active ingredients may leverage Phenyl Trimethicone’s smooth application and enhanced skin adhesion properties.
Emerging research in nanotechnology and biotechnology could also open new doors for the compound in industries beyond cosmetics, such as medical devices or drug delivery systems.
SAFETY INFORMATION ABOUT PHENYL TRIMETHICONE
First aid measures:
Description of first aid measures:
General advice:
Consult a physician.
Show this safety data sheet to the doctor in attendance.
Move out of dangerous area:
If inhaled:
If breathed in, move person into fresh air.
If not breathing, give artificial respiration.
Consult a physician.
In case of skin contact:
Take off contaminated clothing and shoes immediately.
Wash off with soap and plenty of water.
Consult a physician.
In case of eye contact:
Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
Continue rinsing eyes during transport to hospital.
If swallowed:
Do NOT induce vomiting.
Never give anything by mouth to an unconscious person.
Rinse mouth with water.
Consult a physician.
Firefighting measures:
Extinguishing media:
Suitable extinguishing media:
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
Special hazards arising from the substance or mixture
Carbon oxides, Nitrogen oxides (NOx), Hydrogen chloride gas
Advice for firefighters:
Wear self-contained breathing apparatus for firefighting if necessary.
Accidental release measures:
Personal precautions, protective equipment and emergency procedures
Use personal protective equipment.
Avoid breathing vapours, mist or gas.
Evacuate personnel to safe areas.
Environmental precautions:
Prevent further leakage or spillage if safe to do so.
Do not let product enter drains.
Discharge into the environment must be avoided.
Methods and materials for containment and cleaning up:
Soak up with inert absorbent material and dispose of as hazardous waste.
Keep in suitable, closed containers for disposal.
Handling and storage:
Precautions for safe handling:
Avoid inhalation of vapour or mist.
Conditions for safe storage, including any incompatibilities:
Keep container tightly closed in a dry and well-ventilated place.
Containers which are opened must be carefully resealed and kept upright to prevent leakage.
Storage class (TRGS 510): 8A: Combustible, corrosive hazardous materials
Exposure controls/personal protection:
Control parameters:
Components with workplace control parameters
Contains no substances with occupational exposure limit values.
Exposure controls:
Appropriate engineering controls:
Handle in accordance with good industrial hygiene and safety practice.
Wash hands before breaks and at the end of workday.
Personal protective equipment:
Eye/face protection:
Tightly fitting safety goggles.
Faceshield (8-inch minimum).
Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
Skin protection:
Handle with gloves.
Gloves must be inspected prior to use.
Use proper glove
removal technique (without touching glove's outer surface) to avoid skin contact with this product.
Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices.
Wash and dry hands.
Full contact:
Material: Nitrile rubber
Minimum layer thickness: 0.11 mm
Break through time: 480 min
Material tested:Dermatril (KCL 740 / Aldrich Z677272, Size M)
Splash contact
Material: Nitrile rubber
Minimum layer thickness: 0.11 mm
Break through time: 480 min
Material tested:Dermatril (KCL 740 / Aldrich Z677272, Size M)
It should not be construed as offering an approval for any specific use scenario.
Body Protection:
Complete suit protecting against chemicals, The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace.
Respiratory protection:
Where risk assessment shows air-purifying respirators are appropriate use a fullface respirator with multi-purpose combination (US) or type ABEK (EN 14387) respirator cartridges as a backup to engineering controls.
If the respirator is the sole means of protection, use a full-face supplied air respirator.
Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU).
Control of environmental exposure
Prevent further leakage or spillage if safe to do so.
Do not let product enter drains.
Discharge into the environment must be avoided.
Stability and reactivity:
Chemical stability:
Stable under recommended storage conditions.
Incompatible materials:
Strong oxidizing agents:
Hazardous decomposition products:
Hazardous decomposition products formed under fire conditions.
Carbon oxides, Nitrogen oxides (NOx), Hydrogen chloride gas.
Disposal considerations:
Waste treatment methods:
Product:
Offer surplus and non-recyclable solutions to a licensed disposal company.
Contact a licensed professional waste disposal service to dispose of this material.
Contaminated packaging:
Dispose of as unused product
