Description

Dimethyldimethoxysilane is a versatile organosilicon compound primarily used as a key intermediate and surface modifying agent. Its bifunctional methoxysilane structure provides excellent reactivity for cross-linking and bonding to inorganic substrates. This chemical is essential for manufacturers in the silicone polymer, coatings, and electronics industries seeking to enhance material properties like adhesion, hydrophobicity, and thermal stability.

Application

• Silicone Intermediate: A crucial precursor in the synthesis of silicone resins, fluids, and elastomers.
• Surface Treatment Agent: Used to impart water repellency and improve adhesion on glass, minerals, and metal surfaces.
• Cross-linking Agent: Functions as a cross-linker in room-temperature vulcanizing (RTV) silicone rubbers and sealants.
• Adhesion Promoter: Enhances the bonding of organic polymers to inorganic materials in composite and coating formulations.
• Silane Coupling Agent: Improves the interface between fillers (like silica) and polymer matrices in reinforced plastics.
• Electronics & Semiconductor: Employed in the production of dielectric films and as a surface passivation agent.
• Hydrophobic Coatings: A key component in formulations for creating water-resistant coatings on construction materials.
• Chemical Synthesis: Serves as a starting material or protecting group in organic and organometallic synthesis.

Basic Information

Item	Detail
Product Name	Dimethyldimethoxysilane
CAS No.	1112-39-6
Molecular Formula	C4H12O2Si
Molecular Weight	120.22 g/mol
Synonyms	Dimethoxydimethylsilane; DMDMS; Dimethyl Dimethoxysilane; Methoxysilane, dimethoxy-dimethyl-; Dimethylsilanediol dimethyl ether; Silane, dimethoxydimethyl-; NSC 5185; (CH3)2Si(OCH3)2
EINECS	214-189-4

Quality Control

Our Dimethyldimethoxysilane is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, identity, and impurity profiles. Our quality commitment aligns with industry best practices to support your production and R&D requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat sources and incompatible materials. Due to its highly volatile nature, ensure containers are kept tightly sealed when not in use to prevent evaporation and maintain product integrity. Recommended storage temperature is 15-25°C.

Specification

Item	Specification
Appearance	Colorless clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Density (20°C)	0.86 - 0.88 g/cm³
Refractive Index (n20D)	1.368 - 1.372
Boiling Point	81 - 83°C
Water Content (KF)	≤ 0.1%

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