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Phenyl Trimethicone CAS NO 18876-34-1
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CAS No.:18876-34-1
Grade:Pharmacy Grade
Content:99.9%
Brand:Customizable
Packaging:Customizable
Description
Phenyl Trimethicone is a premium organosilicon fluid renowned for its exceptional refractive index and luxurious, silky-smooth feel. This versatile silicone is a critical ingredient for formulators seeking to enhance product aesthetics and performance across demanding personal care and cosmetic applications. Its unique properties make it indispensable for manufacturers of high-end hair care, skin care, and color cosmetics targeting global markets.
Application
- Hair Care Formulations: As a key conditioning agent in shampoos, conditioners, and hair serums to impart brilliant shine, reduce frizz, and improve combability.
- Skin Care & Sun Care Products: Used in moisturizers, lotions, and sunscreens to provide a non-greasy, velvety skin feel and enhance water resistance.
- Color Cosmetics: A vital component in foundations, primers, lipsticks, and eye shadows to improve pigment dispersion, provide a smooth application, and increase wear time.
- Decorative & Styling Products: Employed in hair sprays, mousses, and styling gels to deliver high gloss and a soft, flexible hold without stickiness.
- Personal Care Washes: Incorporated into shower gels and bath oils to create a rich, lubricious lather and leave skin feeling silky.
- Industrial & Specialty Lubricants: Serves as a high-performance lubricant and release agent in specific technical applications requiring thermal stability and water repellency.
Basic Information
| Product Name | Phenyl Trimethicone |
| CAS No. | 18876-34-1 |
| Molecular Formula | C15H20O2Si2 |
| Molecular Weight | 288.49 g/mol |
| Synonyms | Phenyl Trimethylsiloxysilane; 1,1,1,3,5,5,5-Heptamethyl-3-phenyltrisiloxane; Phenyl Tris(trimethylsiloxy)silane; Tris(trimethylsiloxy)phenylsilane; Phenyl TMS; Phenyl Trimethicone (INCI); Dow Corning 556 Cosmetic Grade Fluid; Phenylpropyldimethylsiloxysilicate |
| EINECS | 242-654-9 |
Quality Control
Our Phenyl Trimethicone is manufactured under strict quality management systems to ensure batch-to-batch consistency and purity. We provide comprehensive Certificates of Analysis (COA) for every shipment, detailing key parameters such as refractive index, viscosity, and phenyl content. Our quality protocols are designed to meet the stringent requirements of the global personal care industry.
Storage
Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents.
Specification
| Item | Specification |
|---|---|
| Appearance | Clear, colorless to pale yellow liquid |
| Identification (IR) | Conforms |
| Refractive Index (25°C) | 1.460 - 1.470 |
| Specific Gravity (25°C) | 0.98 - 1.02 |
| Viscosity (25°C) | 15 - 25 cSt |
| Assay (GC) | ≥ 98.0% |
| Water Content (KF) | ≤ 0.1% |
Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.
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Trusted Manufacturer
With our own production facilities, we ensure consistent quality, reliable supply, and full traceability.
Rigorous Quality Assurance
Each batch undergoes strict QC, accompanied by COA, MSDS, and full compliance with international standards.
Advanced R&D Expertise
Our in-house lab drives process innovation, new product development, and tailored synthesis solutions.





