Description

Dimethyldi-n-Propoxysilane (CAS NO 5621-09-0) is a versatile organosilicon compound primarily used as a key intermediate and coupling agent in advanced material synthesis. Its value lies in its ability to introduce organic functionality and improve compatibility between inorganic substrates and organic polymers. This product is essential for manufacturers in the silicone, coatings, and electronics industries seeking to enhance material performance and adhesion properties.

Application

• Silicone Resin & Polymer Modification: Acts as a functional monomer or cross-linking agent in the synthesis of specialty silicone resins, elastomers, and sealants.
• Surface Treatment & Coupling Agent: Used to modify the surface of inorganic materials like glass, silica, and metals to improve adhesion and dispersion in composite materials.
• Intermediate for Silane Derivatives: Serves as a crucial precursor in the production of more complex functional silanes and silicone-based specialty chemicals.
• Adhesion Promoter in Coatings: Enhances the bonding and durability of paints, inks, and protective coatings on various substrates.
• Electronics & Semiconductor Precursor: Employed in the deposition of thin films and as a precursor in chemical vapor deposition (CVD) processes for microelectronics.
• Hydrophobic Agent: Imparts water-repellent characteristics to surfaces in construction materials and textiles.

Basic Information

Product Name	Dimethyldi-n-Propoxysilane
CAS No.	5621-09-0
Molecular Formula	C8H20O2Si
Molecular Weight	176.33 g/mol
Synonyms	Di-n-Propoxydimethylsilane; Dimethyldipropoxysilane; Dipropoxydimethylsilane; Silane, dimethyldipropoxy-; n-Propoxydimethylsilane; DPDMS; Dimethyl Dipropoxysilane
EINECS	227-052-3

Quality Control

Our Dimethyldi-n-Propoxysilane is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including Gas Chromatography (GC) and FTIR spectroscopy, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key physical properties are provided with every shipment to guarantee compliance with your technical 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 highly volatile nature, containers must be kept tightly sealed after opening to prevent moisture absorption and evaporation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0 %
Refractive Index (n20/D)	1.390 - 1.395
Density (20°C)	0.86 - 0.89 g/mL
Water Content (KF)	≤ 0.1 %

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