Description

Dichlorodipropoxysilane is a versatile organosilicon compound that serves as a key intermediate in the synthesis of advanced silicone materials. Its value lies in its bifunctional reactivity, where the chlorine atoms and propoxy groups enable precise chemical modifications and cross-linking. This product is essential for manufacturers in the silicone polymer, specialty coatings, and adhesives industries seeking to develop materials with tailored properties.

Application

• Silicone Resin Precursor: A fundamental building block for the synthesis of heat-resistant and weatherable silicone resins used in protective coatings.
• Surface Modification Agent: Used to functionalize inorganic surfaces like silica, glass, or metals, improving adhesion and compatibility in composite materials.
• Cross-Linking Agent: Employed in the production of room-temperature vulcanizing (RTV) silicones and other elastomers to control cure rates and final network density.
• Intermediate for Silane Coupling Agents: Serves as a starting material for manufacturing proprietary silane coupling agents that enhance bonding between organic polymers and inorganic fillers.
• Specialty Polymer Synthesis: Used in the creation of hybrid organic-inorganic polymers (ORMOSILs) for optical, electronic, and membrane applications.
• Water Repellent Treatments: A component in formulations for imparting water repellency to construction materials like concrete and stone.

Basic Information

Product Name	Dichlorodipropoxysilane
CAS No.	18141-43-0
Molecular Formula	C8H18Cl2O2Si
Molecular Weight	245.22 g/mol
Synonyms	Dipropoxydichlorosilane; Dichlorodipropyloxysilane; Silane, dichlorodipropoxy-; Dichlorosilane, dipropoxy-; Propoxysilane dichloride; (Propoxy)dichlorosilane; Dichloro(dipropoxy)silane; Dipropyl Orthosilicate Dichloride (related)
EINECS	242-060-4

Quality Control

Our Dichlorodipropoxysilane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including assay by GC or titration and impurity profiling, to ensure consistency and high purity suitable for industrial synthesis. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to guarantee supply reliability and product traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat and ignition sources. Due to its highly volatile and moisture-sensitive nature, containers should be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis and maintain product integrity. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Dichlorosilane Content	≤ 1.0%
Chloride Content	≤ 0.5%
Water Content (Karl Fischer)	≤ 0.1%
Density (20°C)	1.05 - 1.10 g/mL
Refractive Index (n20D)	1.410 - 1.420

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