Description

1,1,3,3,5,5,7,7,9,9,11,11,13,13-Tetradecamethylheptasiloxane is a high-purity, linear methyl-terminated heptasiloxane, a key member of the volatile methylsiloxane (VMS) family. This compound is valued for its excellent volatility, thermal stability, and inertness, making it a versatile intermediate and performance additive. It is primarily sought by manufacturers in the personal care, electronics, and specialty chemical industries for formulating advanced materials and products.

Application

• Personal Care & Cosmetics: Acts as a volatile carrier and emollient in antiperspirants, deodorants, and skin care formulations, providing a dry, non-greasy feel.
• Release Agents & Molding: Used as a component in mold release agents for plastics, rubber, and composite materials due to its excellent lubricity and thermal stability.
• Electronics & Semiconductor: Serves as a precursor or processing aid in the manufacture of silicone-based dielectric materials and protective coatings.
• Chemical Intermediate: A crucial building block for the synthesis of more complex siloxane polymers, resins, and functionalized silicone fluids.
• Lubricants & Greases: Incorporated as a base fluid or additive in high-performance, non-reactive lubricants for specialized mechanical applications.
• Water Repellents: Used in formulations to impart water-repellent characteristics to textiles, paper, and construction materials.
• Cleaning & Polishing: Functions as a spreading agent and gloss enhancer in automotive and industrial polish and cleaner formulations.

Basic Information

Item	Details
Product Name	1,1,3,3,5,5,7,7,9,9,11,11,13,13-Tetradecamethylheptasiloxane
CAS No.	19095-23-9
Molecular Formula	C14H44O6Si7
Molecular Weight	533.18 g/mol
Synonyms	Heptasiloxane, 1,1,3,3,5,5,7,7,9,9,11,11,13,13-tetradecamethyl-; MD7M; Tetradecamethylheptasiloxane; Linear Heptamethyltrisiloxane; L7; Volatile Methylsiloxane L7; Octamethyltrisiloxane (common misnomer, correct is tetradecamethyl); Me7Si7O6
EINECS	242-828-7

Quality Control

Our 1,1,3,3,5,5,7,7,9,9,11,11,13,13-Tetradecamethylheptasiloxane is manufactured under a strict quality management system. Each batch undergoes comprehensive analysis using GC, NMR, and FTIR to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all critical specifications are provided and available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and organic solvents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to prevent moisture absorption and maintain product integrity.

Specification

Item	Specification
Appearance	Colorless clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Refractive Index (n20D)	1.390 - 1.395
Density (20°C)	0.85 - 0.90 g/cm³
Water Content (KF)	≤ 0.1%

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