Description

Dichlorodiphenylsilane is a versatile organosilicon compound that serves as a key intermediate in the synthesis of advanced silicone polymers and silane coupling agents. Its value lies in its bifunctional reactivity, where the two chlorine atoms provide sites for further chemical modification, enabling the creation of tailored materials with specific properties. This product is essential for manufacturers in the silicone resin, specialty coatings, and electronics industries, where it is used to impart thermal stability, hydrophobicity, and adhesion promotion.

Application

• Silicone Resin Precursor: A fundamental building block for the synthesis of heat-resistant phenyl silicone resins used in high-temperature coatings, electrical insulation, and mold release agents.
• Surface Modification Agent: Acts as a silane coupling agent to modify inorganic surfaces like glass or silica, improving their compatibility and adhesion with organic polymer matrices in composites.
• Pharmaceutical & Agro-Intermediate: Employed in the synthesis of complex organosilicon molecules for active pharmaceutical ingredients (APIs) and advanced agrochemicals.
• Electronics & Semiconductor: Used in the production of dielectric materials, passivation layers, and as a precursor in chemical vapor deposition (CVD) processes for microelectronics.
• Hydrophobic Coatings: A key ingredient in formulating water-repellent and anti-corrosion coatings for construction, automotive, and aerospace applications.
• Adhesive & Sealant Formulation: Enhances the performance of high-performance adhesives and sealants by improving adhesion to diverse substrates and environmental resistance.

Basic Information

Product Name	Dichlorodiphenylsilane
CAS No.	19801-00-4
Molecular Formula	C12H10Cl2Si
Molecular Weight	253.20 g/mol
Synonyms	Diphenyldichlorosilane; Dichloro(diphenyl)silane; Diphenylsilyl dichloride; Silane, dichlorodiphenyl-; DDP; Diphenyl silicon dichloride; Phenylchlorosilane; (Dichlorosilyl)benzene
EINECS	243-313-9

Quality Control

Our Dichlorodiphenylsilane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including gas chromatography (GC) for purity and identity confirmation, to ensure it meets precise specifications. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical properties is provided with every shipment to guarantee traceability and compliance with your quality 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 and moisture-sensitive nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Density (at 20°C)	1.19 - 1.22 g/mL
Refractive Index (n20D)	1.577 - 1.582
Chloride Content	27.5 - 28.5 %

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