Description

1,1,1,3,3-Pentaethylpropanedisiloxane is a specialized organosilicon compound with a unique disiloxane bridge structure. This chemical serves as a versatile building block and intermediate in advanced material synthesis, offering valuable properties for modifying surface characteristics and polymer backbones. It is primarily utilized by R&D chemists and process engineers in the silicone polymer, specialty coatings, and electronics industries seeking to develop materials with tailored thermal and chemical resistance.

Application

• Silicone Polymer Modification: Acts as a chain extender or cross-linking agent in the synthesis of custom polysiloxanes, influencing elasticity and thermal stability.
• Surface Treatment Agent: Used to impart hydrophobic or release properties to surfaces in coatings and mold release applications.
• Adhesive & Sealant Formulation: Serves as a key intermediate for developing high-performance silicone-based adhesives and sealants with enhanced durability.
• Pharmaceutical & Cosmetic Intermediates: Employed in the synthesis of siloxane-based compounds for controlled-release drug delivery systems and personal care product ingredients.
• Electronics Encapsulation: Utilized in the production of silicone gels and resins for protecting sensitive electronic components from moisture and environmental stress.
• Research & Development: A valuable reagent for academic and industrial research focused on novel organosilicon chemistry and material science.

Basic Information

Product Name	1,1,1,3,3-Pentaethylpropanedisiloxane
CAS No.	61233-74-7
Molecular Formula	C11H28O2Si2
Molecular Weight	248.51 g/mol
Synonyms	1,1,1,3,3-Pentaethyl-1,3-disilapropane-1,3-diol; 1,3-Bis(diethylsiloxy)propane; Propanedisiloxane, 1,1,1,3,3-pentaethyl-; Diethyl[3-(diethylsiloxy)propoxy]silane; Pentaethylpropanedisiloxane
EINECS	Contact for details

Quality Control

Our 1,1,1,3,3-Pentaethylpropanedisiloxane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC and NMR, to ensure high purity and consistent performance. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed and under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from strong acids and incompatible organic solvents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.420 - 1.430
Density (g/mL at 20°C)	0.88 - 0.92

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