In the ongoing process of upgrading the personal care products industry towards lightweight texture, refreshing experience, and stable formulations, basic raw materials with volatility and good spreading properties are becoming one of the core elements in the development of skincare, hair care, makeup, and antiperspirant/antibacterial products. Our company's product, cyclopentasiloxane D5, as a volatile polydimethylcyclosiloxane mainly composed of decamethylcyclopentasiloxane, demonstrates significant market value in numerous personal care applications such as antiperspirants, hair care, skin care, and perfumes, providing high-quality volatile basic raw materials for various industry clients.


I. Core Physical and Chemical Properties


Product cyclopentasiloxane D5 is a colorless transparent liquid with a color intensity lower than 20 Hansens and a turbidity lower than 4 NTU. At 25 degrees Celsius, its viscosity is approximately 3.9 square millimeters per second, and its relative density is approximately 0.95. It contains less than 5 ppm of heavy metals and less than 0.1 milligram per kilogram of mineral oil. The surface tension is approximately 18.3 millinewtons per meter. The flash point (closed cup) is 80 degrees Celsius, the boiling point is approximately 210 degrees Celsius, the crystallization point is approximately -40 degrees Celsius, the vapor pressure at 20 degrees Celsius is 0.025 kilopascals, the refractive index at 25 degrees Celsius is approximately 1.395, the content of octamethylcyclopentasiloxane is less than 0.9%, the content of decamethylcyclopentasiloxane is not less than 99%, the combined content of decamethylcyclopentasiloxane and dodecamethylcyclohexasiloxane is not less than 99.7%, the acid value is less than 0.15, it is insoluble in water and ethylene glycol, and soluble in ethyl acetate, butyl acetate, ethanol, and isopropanol.


II. Core Performance Advantages


Product cyclopentasiloxane D5, with its unique cyclic molecular structure and volatility characteristics, exhibits the following core performance advantages in personal care product formulations:


Good spreading property and silky skin feel. The product has excellent spreading property and can quickly spread on the skin and hair surface, providing a soft and silky touch without being greasy or sticky.


Moderate volatility and residue control. The product has volatility and gradually volatilizes after providing lubrication and conditioning effects, with almost no oil film residue. Its low volatility rate (0.075 grams per minute at 80 degrees Celsius) and long volatility time (8400 seconds at 23 degrees Celsius) make it have an appropriate stay time on the skin or hair, allowing it to fully exert its conditioning and carrier functions.


Good formulation compatibility. The product has good compatibility with various cosmetic ingredients and is soluble in various organic solvents such as ethanol and isopropanol, suitable for use in transparent formulation systems.


III. Wide Application Areas and Recommended Dosages


Product cyclopentasiloxane D5, with its multi-functional performance combination, can play a key role in the following personal care product application areas, including:


1. Antiperspirants and deodorants. The product can serve as a temporary carrier for active salts, helping the active ingredients to be evenly distributed on the skin surface, while providing a dry and non-greasy skin feel. The recommended dosage is 3% to 10% of the total formulation.


2. Hair care products. The product can improve the wet combability of hair, improve the dry and wet combing experience, and will not leave residue on the hair, giving hair a smooth touch and shine. The recommended dosage is 1% to 5% of the total formulation.


3. Skin care products. As a non-pimple-causing emollient and drug carrier, the product can improve the spreading property and smoothness of the formulation, providing a soft and silky touch to the skin. The recommended dosage is 3% to 10% of the total formulation.


4. Perfume products. The product can serve as a volatile carrier for fragrance, helping to release the fragrance and providing a smooth non-cold sensation on the skin. The recommended dosage is 0.5% to 3% of the total formula.


V. Makeup and Sunscreen Products. The product can be used in foundation liquids, primer, and sunscreen products, helping to evenly disperse pigments, enhancing the smoothness and delicacy of the makeup, and reducing surface tension.


IV. Usage Guide and Compatibility Recommendations


The product, cyclosiloxane D5, is compatible with various cosmetic ingredients and can be used alone or mixed with other components. Due to its wide application range, the specific usage method and recommended dosage need to be determined through experiments based on each product system. The suitable storage conditions are to store it in an environment above the freezing point. If the product solidifies, it should not be melted by using an open flame under any circumstances.


V. Packaging Specifications and Storage Conditions


Product cyclosiloxane D5 is available in two specifications: 200-liter iron drums (net weight 190 kilograms) and 950-kilogram IBC packaging. It should be stored in the original sealed container at a temperature of 5 to 30 degrees Celsius. The standard shelf life is 2 years from the production date. Please refer to the storage recommendations and expiration dates on the packaging. After this date, the product will no longer be guaranteed to meet the sales standards.


VI. Quality Assurance and Industry Application Value


Product cyclosiloxane D5 has established a strict quality control system during production. It conducts full-process testing on key indicators such as appearance, color, turbidity, viscosity, relative density, heavy metal content, mineral oil content, surface tension, odor, flash point, boiling point, crystallization point, vapor pressure, evaporation rate, evaporation time, refractive index, D4 content, D5 content, and acid value to ensure consistency and reliability between batches. The high-quality standard of D5 purity of no less than 99% meets the strict requirements of the industry for raw material purity.


As the personal care products industry continues to develop towards lightness, refinement, and experience-oriented directions, the demand for volatile basic raw materials with volatility regulation functions and refreshing skin sensations is steadily increasing. Product cyclosiloxane D5, with its excellent skin sensation performance, good formulation compatibility, and stable quality assurance, is becoming an important basic raw material option in the development of skincare, hair care, antiperspirant, and perfume products, providing strong raw material support for promoting the domestic personal care products industry towards high-quality development.