Description

1-Propenylmethyldichlorosilane is a highly reactive organosilicon compound, specifically an alkenyl-functional chlorosilane, that serves as a critical building block in silicone chemistry. Its primary value lies in its ability to introduce the 1-propenyl functional group into siloxane polymers, enabling the synthesis of specialized silicone materials with tailored properties. This chemical is essential for manufacturers and R&D chemists in the silicone, polymer, and advanced materials industries who require precise molecular control for creating custom adhesives, sealants, and release coatings.

Application

• Silicone Polymer Modification: Key monomer for introducing reactive alkenyl groups into polysiloxane backbones, enhancing cross-linking capabilities.
• Adhesive & Sealant Formulation: Used as a cross-linking agent or intermediate in the production of high-performance silicone adhesives and sealants with improved adhesion and elasticity.
• Release Coatings: Serves as a precursor in the synthesis of silicone-based release agents for labels, tapes, and industrial liners.
• Surface Treatment Agent: Employed to modify inorganic surfaces (e.g., glass, silica) by grafting organosilane layers, improving hydrophobicity or compatibility with organic matrices.
• Specialty Silicone Elastomers: A vital intermediate in creating custom liquid silicone rubbers (LSR) and high-consistency rubber (HCR) with specific cure profiles and physical properties.
• Chemical Synthesis Intermediate: Acts as a versatile reagent in organic and organometallic synthesis for constructing complex silicon-containing molecules.

Basic Information

Product Name	1-Propenylmethyldichlorosilane
CAS No.	18142-37-5
Molecular Formula	C4H8Cl2Si
Molecular Weight	155.10 g/mol
Synonyms	Methyl(1-propenyl)dichlorosilane; Dichloro(1-propenyl)methylsilane; 1-Propenylmethyldichlorosilane; Methyldichloro(1-propenyl)silane; 1-Propenylmethylsilicon dichloride; (1-Propenyl)methyldichlorosilane; Silane, dichloro(1-propenyl)methyl-; Dichloromethyl-1-propenylsilane
EINECS	242-060-3

Quality Control

Our 1-Propenylmethyldichlorosilane is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including gas chromatography (GC) for assay and impurity profiling. Certificates of Analysis (COA) detailing purity, identity, and specific test results are provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat, sparks, and open flame. Due to its highly volatile and moisture-sensitive nature, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) and keep containers tightly sealed when not in use. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	1.08 - 1.10 g/mL
Refractive Index (n20D)	1.445 - 1.455
Boiling Point	Approx. 115 - 120 °C

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