Description

Methyltrichlorosilane CAS NO 75-79-6 is a highly reactive organosilicon compound that serves as a fundamental building block in silicone chemistry. Its primary value lies in its ability to introduce methyl and trichlorosilyl functional groups, making it essential for creating cross-linked silicone polymers and surface-modifying agents. This chemical is critically needed by manufacturers in the silicone resin, silane coupling agent, and specialty chemical industries for producing water repellents, release coatings, and high-performance intermediates.

Application

• Silicone Resin Production: A key monomer for manufacturing methyl silicone resins used in high-temperature coatings, electrical insulation, and mold release agents.
• Silane Coupling Agent Synthesis: Acts as a crucial precursor for producing various methylchlorosilane-based coupling agents that improve adhesion between organic polymers and inorganic surfaces.
• Water Repellent Treatments: Used to impart hydrophobic properties to construction materials like concrete, brick, and stone, protecting them from moisture damage.
• Surface Modification: Functionalizes silica, glass, and other metal oxide surfaces to alter their chemical reactivity and compatibility.
• Intermediate for Specialty Chemicals: Serves as a starting material in the synthesis of more complex organosilicon compounds for pharmaceuticals, agrochemicals, and electronics.
• Cross-linking Agent: Provides trichlorosilyl groups that act as cross-linkers in polymer systems to enhance thermal stability and mechanical properties.

Basic Information

Product Name	Methyltrichlorosilane
CAS No.	75-79-6
Molecular Formula	CH3Cl3Si
Molecular Weight	149.48 g/mol
Synonyms	Methyltrichlorosilane; Methylsilicon trichloride; Trichloro(methyl)silane; Methylsilyl trichloride; Silane, trichloromethyl-; MTCS; NSC 66410; Methyl trichlorosilane
EINECS	200-902-6

Quality Control

Our Methyltrichlorosilane is produced under stringent process controls to ensure batch-to-batch consistency and high purity. Quality is verified through comprehensive analytical testing including gas chromatography (GC) and titration methods. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat, sparks, and open flame. Due to its highly volatile and hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis and oxidation. Store separately from strong bases, oxidizing agents, and water sources.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.5%
Density (at 20°C)	1.27 - 1.28 g/cm³
Boiling Point	66 - 67°C
Hydrolyzable Chloride	≤ 0.5%

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