Description

3,50-Dioxa-2,51-Disiladopentacontane, 2,2,51,51-Tetramethyl- is a high-purity organosilicon compound, also known by its CAS number 35177-38-9. This specialty chemical serves as a critical intermediate and functional additive, valued for its unique siloxane backbone which imparts specific surface-active and compatibility properties. It is essential for manufacturers in the advanced materials, specialty polymers, and performance chemical sectors seeking to enhance product characteristics such as hydrophobicity, flow, and thermal stability.

Application

• As a key monomer or chain extender in the synthesis of specialty silicone polymers and copolymers with tailored properties.
• Functioning as a surface modifier or coupling agent to improve the compatibility between organic polymers and inorganic fillers.
• Utilized in the formulation of high-performance release coatings, lubricants, and mold-making materials.
• Acting as an intermediate for the production of more complex siloxane-based surfactants and additives.
• Potential use in the development of advanced materials for electronics, including encapsulants and dielectric layers.
• Employed in research and development for creating novel materials with specific hydrophobic or oleophobic characteristics.

Basic Information

Item	Detail
Product Name	3,50-Dioxa-2,51-Disiladopentacontane, 2,2,51,51-Tetramethyl-
CAS No.	35177-38-9
Molecular Formula	C50H108O2Si2
Molecular Weight	821.6 g/mol
Synonyms	2,2,51,51-Tetramethyl-3,50-dioxa-2,51-disiladopentacontane; Tetramethyl-disiladopentacontane derivative; Disiloxane, hexacontamethyl- (related class); Linear dimethylsiloxane oligomer; Organosiloxane intermediate; Silicone fluid intermediate; Poly(dimethylsiloxane) precursor; Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our production of 3,50-Dioxa-2,51-Disiladopentacontane, 2,2,51,51-Tetramethyl- adheres to a stringent quality management system. Each batch is analyzed to ensure it meets precise specifications for identity, purity, and composition. Comprehensive Certificates of Analysis (COA) documenting results from techniques such as NMR, GC, and HPLC are provided to guarantee traceability and batch-to-batch consistency for our global B2B clients.

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 to prevent degradation from atmospheric moisture. Keep away from incompatible materials such as strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Specific Gravity (20°C)	0.95 - 0.98
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.