Description

Dimethyldiphenoxysilane is a versatile organosilicon compound, primarily utilized as a key intermediate in the synthesis of advanced silicone polymers and specialty chemicals. Its value lies in its ability to introduce both methyl and phenoxy functional groups into siloxane backbones, enabling the fine-tuning of material properties such as thermal stability, hydrophobicity, and reactivity. This product is essential for manufacturers in the silicone resin, adhesive, and specialty chemical industries seeking to develop high-performance materials.

Application

• Silicone Resin Intermediate: A crucial building block for the synthesis of phenyl-modified silicone resins, which offer enhanced thermal and oxidative stability for high-temperature coatings and encapsulants.
• Crosslinking Agent: Used in the formulation of specialty room-temperature vulcanizing (RTV) silicone sealants and adhesives to modify cure profiles and final elastomer properties.
• Surface Treatment Precursor: Serves as a starting material for creating silane coupling agents used to improve the adhesion between organic polymers and inorganic substrates like glass or minerals.
• Pharmaceutical & Agrochemical Intermediates: Employed in the synthesis of complex molecules where the introduction of a silicon-phenoxy moiety is required for specific biological activity or stability.
• Lubricant & Grease Additive: Acts as a performance additive to enhance the thermal stability and load-bearing characteristics of synthetic lubricants and high-temperature greases.
• Research & Development: A valuable reagent in organic and organometallic chemistry research for constructing novel silicon-containing architectures.

Basic Information

Product Name	Dimethyldiphenoxysilane
CAS No.	3440-02-6
Molecular Formula	C14H16O2Si
Molecular Weight	244.36 g/mol
Synonyms	Diphenoxydimethylsilane; Dimethyl diphenoxysilane; Diphenoxy(dimethyl)silane; Silane, diphenoxydimethyl-; Diphenoxydimethylsilicon; (Dimethylsilicon) diphenoxide; Phenoxydimethyl(phenoxy)silane; EINECS 222-350-1
EINECS	222-350-1

Quality Control

Our Dimethyldiphenoxysilane is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay by GC or HPLC, identity confirmation (IR), and control of key impurities. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to 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). This material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation by atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.520 - 1.530
Density (20°C)	1.05 - 1.10 g/mL

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