Description

Dimethylpolysilane is a versatile organosilicon polymer characterized by a backbone of alternating silicon atoms and methyl groups. This compound is valued for its role as a key precursor in the synthesis of advanced silicon-based materials, offering a balance of reactivity and processability. It is essential for manufacturers and R&D facilities in the semiconductor, ceramics, and specialty polymer industries seeking to develop high-performance coatings, ceramics, or electronic components.

Application

• Precursor for Silicon Carbide (SiC) Ceramics: Used in the polymer-derived ceramics (PDC) route to produce high-purity, high-temperature resistant SiC fibers and components.
• Semiconductor Manufacturing: Serves as a spin-on dielectric (SOD) or a source for silicon-containing thin films in advanced chip fabrication.
• Protective Coatings: Applied to create heat-resistant, anti-oxidant, or water-repellent coatings on metals, glass, and other substrates.
• Ceramic Matrix Composites (CMCs): Acts as a binding agent or pre-ceramic polymer to enhance the properties of composite materials for aerospace and automotive applications.
• Additive for Specialty Polymers: Incorporated to modify the thermal, mechanical, or surface properties of engineering plastics and rubbers.
• Research & Development: Utilized in academic and industrial labs for developing novel silicon-based polymers, nanomaterials, and hybrid materials.

Basic Information

Product Name	Dimethylpolysilane
CAS No.	2883-63-8
Molecular Formula	(C2H6Si)n
Molecular Weight	Variable (Polymer)
Synonyms	Poly(dimethylsilylene); Polydimethylsilane; PDMS; Dimethylpolysiloxane precursor; Methylpolysilane; Silicon polymer; Linear dimethylsilane polymer
EINECS	220-745-1

Quality Control

Our Dimethylpolysilane is produced under controlled conditions to ensure batch-to-batch consistency. Quality is verified through a suite of analytical techniques including Gel Permeation Chromatography (GPC) for molecular weight distribution, Fourier-Transform Infrared Spectroscopy (FT-IR) for structural identification, and elemental analysis for silicon content. A comprehensive Certificate of Analysis (COA) detailing purity, viscosity, and other critical parameters is provided with each shipment to guarantee compliance with your technical 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 hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation and maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to reference spectrum
Assay (Si Content)	≥ 95.0%
Molecular Weight (Mw, GPC)	500 - 5000 Da (Grade dependent)
Viscosity (25°C)	50 - 5000 cP (Grade dependent)
Volatile Matter	≤ 2.0%

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