Description

o-Dl-A-Tocopherolylpropylheptamethyltrisiloxane, Tech-90 CAS NO 920741-92-0 is a high-purity, organosilicon derivative of Vitamin E (tocopherol) designed for advanced formulation applications. This compound matters because it combines the potent antioxidant and skin-conditioning properties of tocopherol with the exceptional spreading, emollient, and compatibility characteristics of a volatile silicone. It is primarily needed by manufacturers in the personal care and cosmetic industries seeking to enhance product performance and stability.

Application

• Cosmetic & Personal Care Actives: A key ingredient in anti-aging serums, moisturizers, and treatment creams for its antioxidant and skin-penetrating properties.
• Hair Care Formulations: Used in conditioners, serums, and hair masks to impart shine, reduce frizz, and provide heat protection without greasiness.
• Sun Care Products: Incorporated into sunscreens and after-sun lotions to stabilize formulations and provide supplementary antioxidant defense against UV-induced free radicals.
• Color Cosmetics: Enhances the spreadability and skin feel of foundations, primers, and lip products while delivering functional benefits.
• Pharmaceutical Topicals: Serves as a penetration enhancer and stabilizer in dermatological creams and ointments.
• Functional Silicone Fluids: Acts as a reactive intermediate or additive in specialty silicone polymers for release coatings and industrial applications.

Basic Information

Product Name	o-Dl-A-Tocopherolylpropylheptamethyltrisiloxane, Tech-90
CAS No.	920741-92-0
Molecular Formula	C~34~H~66~O~4~Si~3~
Molecular Weight	~635.2 g/mol
Synonyms	Vitamin E Siloxane; Tocopherol Siloxane; Tocopheryl Propylheptamethyltrisiloxane; dl-α-Tocopheryloxypropylheptamethyltrisiloxane; Silicone Vitamin E; Antioxidant Silicone; Heptamethyltrisiloxanylpropyl Tocopheryl Ether; 3-(dl-α-Tocopheryloxy)propylheptamethyltrisiloxane
EINECS	Contact for details

Quality Control

Our Tech-90 grade is produced under strict quality management protocols to ensure batch-to-batch consistency and high performance. Each lot undergoes comprehensive analysis, including assay, identity confirmation, and impurity profiling. Certificates of Analysis (COA) documenting purity and key specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 15-25°C (59-77°F). This product is compatible with strong acids and organic solvents but should be kept away from strong oxidizing agents and bases to maintain stability.

Specification

Item	Specification
Appearance	Clear, pale yellow to yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 90.0%
Refractive Index (20°C)	1.460 - 1.470
Specific Gravity (25°C)	0.95 - 1.00

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.