Description

Dichloroisooctylmethylsilane is a versatile organosilicon compound, specifically a chlorosilane, that serves as a crucial intermediate in the synthesis of advanced silicone polymers and surface-modifying agents. Its value lies in its bifunctional reactivity, where the chlorine atoms provide sites for further chemical grafting, and the isooctylmethyl group imparts hydrophobic and oleophilic properties to the final material. This product is essential for manufacturers in the silicone elastomer, adhesive, sealant, and specialty coatings industries, where it is used to create materials with tailored surface energy, improved compatibility with organic matrices, and enhanced water repellency.

Application

• Silicone Intermediate: A key monomer or cross-linking agent in the production of modified silicone oils, resins, and high-performance elastomers.
• Surface Treatment Agent: Used to hydrophobically treat inorganic fillers (e.g., silica, calcium carbonate) to improve their dispersion and compatibility in polymer composites.
• Adhesive & Sealant Formulation: Imparts moisture resistance and enhances adhesion to various substrates in construction and industrial sealants.
• Water Repellents: A precursor for manufacturing durable water-repellent (DWR) coatings for textiles, leather, and construction materials.
• Release Coatings: Used in the synthesis of silicone release liners for pressure-sensitive adhesives and molding applications.
• Coupling Agent: Acts as a molecular bridge between organic polymers and inorganic surfaces, improving composite mechanical properties.

Basic Information

Product Name	Dichloroisooctylmethylsilane
CAS No.	93776-41-1
Molecular Formula	C9H20Cl2Si
Molecular Weight	215.24 g/mol
Synonyms	Methylisooctyldichlorosilane; Isooctylmethyldichlorosilane; Dichloro(methyl)isooctylsilane; 1,1,1,3,5,5,5-Heptamethyltrisiloxane (related precursor); Silane, dichloroisooctylmethyl-; Dichloromethylisooctylsilane; (Isooctyl)methyldichlorosilane
EINECS	Contact for details

Quality Control

Our Dichloroisooctylmethylsilane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including gas chromatography (GC) for purity and identity confirmation, to ensure it meets precise specifications for industrial synthesis. A Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee consistency and support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic and highly volatile nature, containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis and moisture ingress. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, acids, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	0.95 - 0.98 g/mL
Refractive Index (n20/D)	1.435 - 1.445
Chloride Content	32.0 - 33.5 %

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