Description

(3-Glycidoxypropyl)Pentamethyldisiloxane is a versatile organosilicon compound featuring both epoxy and siloxane functional groups. This dual functionality makes it a highly effective coupling agent and reactive intermediate for modifying surfaces and polymer matrices. It is essential for manufacturers in the adhesives, coatings, and advanced materials sectors seeking to enhance adhesion, dispersion, and cross-linking properties. The compound is supplied under strict quality control to ensure batch-to-batch consistency for industrial applications.

Application

• As a key coupling agent and adhesion promoter in epoxy resin systems and silicone-based sealants.
• Surface modification of inorganic fillers (e.g., silica, glass fibers) to improve compatibility and dispersion in polymer composites.
• A reactive intermediate for the synthesis of specialty silicone polymers and resins with tailored properties.
• Used in the formulation of primers and coatings to enhance adhesion to difficult substrates like metals, glass, and plastics.
• Employed in the production of release coatings and pressure-sensitive adhesives.
• As a cross-linking agent or chain extender in the manufacture of high-performance elastomers.

Basic Information

Product Name	(3-Glycidoxypropyl)Pentamethyldisiloxane
CAS No.	18044-44-5
Molecular Formula	C11H26O3Si2
Molecular Weight	262.49 g/mol
Synonyms	3-(2,3-Epoxypropoxy)propylpentamethyldisiloxane; Glycidoxypropylpentamethyldisiloxane; (3-Glycidyloxypropyl)pentamethyldisiloxane; Silane, [3-(oxiranylmethoxy)propyl]pentamethyl-; Dynasylan GLYEO; GLYMO; KBM-403 (similar type); A 187 (similar type); Epoxy-functional siloxane
EINECS	Contact for details

Quality Control

Our (3-Glycidoxypropyl)Pentamethyldisiloxane is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay and impurity profile determination, to ensure it meets precise specifications. A Certificate of Analysis (COA) detailing purity, identity, and key physical properties is provided with every shipment to guarantee traceability and compliance with your requirements.

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). Due to its properties of being easily oxidized (store under inert atmosphere) and highly volatile, it is recommended to keep the container tightly sealed under an inert gas blanket after opening and away from heat and ignition sources.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.410 - 1.420
Density (g/mL, 25°C)	0.920 - 0.950
Epoxy Value	Contact for details

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