Description

1-Chloro-1-Methylsilacyclobutane is a highly reactive organosilicon compound featuring a strained four-membered ring, making it a valuable precursor in advanced materials synthesis. Its core value lies in its ability to serve as a versatile building block for introducing the silacyclobutane moiety into polymers and specialty chemicals. This product is essential for R&D and production teams in the pharmaceutical, semiconductor, and specialty polymer industries seeking to develop novel silicone-based materials with tailored properties.

Application

• Precursor for Ring-Opening Polymerization (ROP): A key monomer for synthesizing linear polysilabutanes and copolymers with unique thermal and mechanical properties.
• Surface Modification Agent: Used to functionalize silica, glass, or metal oxide surfaces to alter wettability, adhesion, or introduce specific reactive sites.
• Pharmaceutical Intermediate: Serves as a building block in the synthesis of novel organosilicon compounds with potential biological activity.
• Semiconductor & Electronics: Employed in the deposition of silicon-containing thin films or as a precursor for low-k dielectric materials.
• Crosslinking Agent: Utilized in the formulation of high-performance silicone elastomers and resins to enhance network density and stability.
• Ligand Synthesis: Acts as a starting material for creating novel chelating ligands in coordination chemistry and catalysis.

Basic Information

Product Name	1-Chloro-1-Methylsilacyclobutane
CAS No.	2351-34-0
Molecular Formula	C4H9ClSi
Molecular Weight	120.65 g/mol
Synonyms	1-Chloro-1-methylsilacyclobutane; 1-Methyl-1-chlorosilacyclobutane; Chloromethylsilacyclobutane; Silacyclobutane, 1-chloro-1-methyl-; 1-Chloro-1-methyl-1-silacyclobutane; Methylchlorosilacyclobutane
EINECS	Contact for details

Quality Control

Every batch of 1-Chloro-1-Methylsilacyclobutane is produced and tested under stringent quality management protocols to ensure consistency and reliability for your critical processes. We provide comprehensive analytical data, including purity assay and impurity profiling via GC and NMR. A Certificate of Analysis (COA) detailing all specifications is available with each shipment and upon request, supporting your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Due to its hygroscopic and highly volatile nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent moisture absorption and decomposition. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Water Content (KF)	≤ 0.1%
Density (20°C)	~1.00 g/mL
Refractive Index (n20D)	~1.450

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