Description

Dodecaethoxypentasiloxane is a high-purity organosilicon compound, specifically a fully ethoxylated pentameric siloxane. This product is valued for its role as a versatile chemical intermediate and precursor in the synthesis of advanced silicone polymers and specialty materials. It is essential for manufacturers and R&D facilities in the coatings, electronics, and personal care industries seeking to develop products with tailored surface properties and performance characteristics.

Application

• Silicone Resin & Polymer Precursor: A key building block for synthesizing custom silicone resins, elastomers, and cross-linked networks with specific ethoxy content.
• Surface Modification & Coupling Agent: Used to modify inorganic surfaces (e.g., silica, metals) to improve compatibility with organic matrices in composite materials.
• Specialty Coatings & Additives: Imparts water repellency, release properties, and flow control in high-performance industrial and protective coatings.
• Electronics Encapsulation: Serves as a precursor for silicone gels and encapsulants that protect sensitive electronic components.
• Personal Care Ingredient Intermediate: Used in the manufacture of silicone-based conditioning agents for hair and skin care formulations.
• Research & Development: A critical reagent for academic and industrial R&D focused on novel siloxane chemistry and material science.

Basic Information

Product Name	Dodecaethoxypentasiloxane
CAS No.	4935-68-6
Molecular Formula	C24H60O17Si5
Molecular Weight	785.31 g/mol
Synonyms	Pentasiloxane, 1,1,1,3,3,5,5,7,7,9,9,9-dodecaethoxy-; Dodecaethoxypentasiloxane; Ethoxysiloxane pentamer; 1,1,1,3,3,5,5,7,7,9,9,9-Dodecaethoxypentasiloxane; Cyclic Ethoxysiloxane; Poly(ethoxysiloxane); Ethyl Silicate Pentamer
EINECS	225-579-1

Quality Control

Our Dodecaethoxypentasiloxane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including assay by GC or NMR and impurity profiling, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing all specifications are provided with every shipment and are available upon request.

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 material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation by atmospheric moisture. Keep away from strong bases and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/NMR)	≥ 95.0%
Ethoxy Content	≥ 85.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.380 - 1.390
Density (20°C)	1.05 - 1.15 g/mL

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