Description

1,1,1-Triethyl-3,3,3-Trimethyldisiloxane is a specialized organosilicon compound with the CAS number 2652-41-7. This chemical serves as a versatile intermediate and functional fluid in advanced material synthesis, valued for its unique disiloxane backbone and mixed alkyl substituents. It is essential for manufacturers in the silicone polymer, specialty lubricant, and surface treatment industries seeking to modify material properties and performance.

Application

• Silicone Intermediate: A key building block in the synthesis of custom silicone oils, resins, and elastomers with tailored thermal and rheological properties.
• Lubricant & Heat Transfer Fluid: Used as a base or additive in high-performance synthetic lubricants and heat transfer fluids for demanding industrial applications.
• Surface Modification Agent: Employed to impart hydrophobic or release characteristics to surfaces in coatings, textiles, and composite materials.
• Adhesive & Sealant Formulation: Acts as a cross-linking agent or modifier in silicone-based adhesive and sealant formulations to enhance flexibility and durability.
• Pharmaceutical & Cosmetic Ingredient: Serves as a carrier or emollient in topical formulations and personal care products (subject to appropriate purity grades).
• Laboratory Reagent: Utilized as a reagent in organic synthesis and materials science research for introducing silyl groups.

Basic Information

Product Name	1,1,1-Triethyl-3,3,3-Trimethyldisiloxane
CAS No.	2652-41-7
Molecular Formula	C9H24OSi2
Molecular Weight	204.46 g/mol
Synonyms	Disiloxane, 1,1,1-triethyl-3,3,3-trimethyl-; Triethyl(trimethyldisiloxy)silane; 1,1,1-Triethyl-3,3,3-trimethyldisiloxane; ETMS; Triethyltrimethyldisiloxane; 2652-41-7; Hexaethyltrisiloxane (related structure); Tris(trimethylsilyl)silane variant
EINECS	Contact for details

Quality Control

Our 1,1,1-Triethyl-3,3,3-Trimethyldisiloxane is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC, NMR, and Karl Fischer titration, to ensure high purity and consistency suitable for industrial and research applications. Certificates of Analysis (COA) documenting identity, assay, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation from moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.1%
Density (20°C)	0.80 - 0.85 g/mL
Refractive Index (20°C)	1.400 - 1.410

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