Description

1,3,5-Triethyl-1,3,5-Trimethylcyclotrisiloxane is a specialized organosilicon compound belonging to the cyclosiloxane family. This chemical serves as a valuable intermediate and functional additive in advanced material synthesis, offering unique properties derived from its cyclic structure and mixed alkyl substituents. It is primarily utilized by manufacturers in the silicone polymer, specialty coatings, and electronics industries seeking to modify material characteristics such as hydrophobicity, thermal stability, and rheology.

Application

• Silicone Polymer Modification: Acts as a reactive intermediate or chain extender in the synthesis of custom silicone oils, resins, and elastomers to introduce specific ethyl/methyl group ratios.
• Surface Treatment Agent: Used to impart hydrophobic and release properties to surfaces in coatings, textiles, and paper treatments.
• Electronics Encapsulation: Serves as a precursor or additive in formulations for potting compounds and protective coatings for electronic components.
• Personal Care & Cosmetics: Employed as a volatile carrier or conditioning agent in hair care and skincare products due to its silky texture and evaporation profile.
• Lubricant & Grease Formulation: Functions as a base fluid or additive in high-performance synthetic lubricants requiring thermal and oxidative stability.
• Adhesive & Sealant Systems: Incorporated to modify flow properties, cure characteristics, and final flexibility of silicone-based adhesives and sealants.
• Research & Development: Utilized as a building block in organic and organometallic synthesis for novel material development.

Basic Information

Product Name	1,3,5-Triethyl-1,3,5-Trimethylcyclotrisiloxane
CAS No.	15901-49-2
Molecular Formula	C12H30O3Si3
Molecular Weight	306.64 g/mol
Synonyms	1,3,5-Trimethyl-1,3,5-triethylcyclotrisiloxane; Cyclotrisiloxane, 1,3,5-triethyl-1,3,5-trimethyl-; Triethyltrimethylcyclotrisiloxane; D3-Et3Me3; Hexaethyltrimethylcyclotrisiloxane (common misnomer); 2,4,6-Triethyl-2,4,6-trimethylcyclotrisiloxane; Mixed ethyl/methyl cyclotrisiloxane; Cyclic siloxane trimer.
EINECS	Contact for details

Quality Control

Our production of 1,3,5-Triethyl-1,3,5-Trimethylcyclotrisiloxane adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure high purity and consistency. Certificates of Analysis (COA) detailing specific batch results 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 room temperature (15-25°C). Keep away from strong acids, bases, and oxidizing agents. The container should be kept tightly sealed when not in use to minimize moisture absorption and prevent contamination.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.1%
Refractive Index (n20D)	1.395 - 1.405
Density (20°C)	0.95 - 0.98 g/mL

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