Methyltrichlorosilane

Base Information

• Chemical Name: Methyltrichlorosilane
• CAS No.: 75-79-6
• Deprecated CAS: 175446-71-6
• Molecular Formula: CH3Cl3Si
• Molecular Weight: 149.479
• Hs Code.: 29310095
• European Community (EC) Number: 200-902-6
• ICSC Number: 0301
• NSC Number: 77069
• UN Number: 1250
• UNII: UIR5I18638
• DSSTox Substance ID: DTXSID4026426
• Nikkaji Number: J54.325J
• Wikipedia: Methyltrichlorosilane
• Wikidata: Q1814764
• Mol file: 75-79-6.mol

Synonyms:methyltrichlorosilane;trichloromethylsilane

Chemical Property of Methyltrichlorosilane

Chemical Property:

• Appearance/Colour: colorless clear liquid
• Vapor Pressure: 150 mm Hg ( 25 °C)
• Melting Point: -77 °C
• Refractive Index: n20/D 1.411
• Boiling Point: 73.5 °C at 760 mmHg
• Flash Point: -13 °C
• PSA: 0.00000
• Density: 1.3 g/cm³
• LogP: 2.27150
• Storage Temp.: Flammables area
• Sensitive.: Moisture Sensitive
• Solubility.: sol methylene chloride.
• Water Solubility.: REACTS
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 147.906960
• Heavy Atom Count: 5
• Complexity: 28.4
• Transport DOT Label: Flammable Liquid Corrosive

Purity/Quality:

99% ^*data from raw suppliers

Methyltrichlorosilane ^*data from reagent suppliers

Safty Information:

• Pictogram(s): F,Xi
• Hazard Codes: F,Xi,C
• Statements: 11-14-36/37/38-37-35-22-21-20
• Safety Statements: 26-39-45-36/37/39

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Toxic Gases & Vapors -> Chlorosilanes
• Canonical SMILES: C[Si](Cl)(Cl)Cl
• Inhalation Risk: No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20 °C.
• Effects of Short Term Exposure: The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Inhalation may cause lung oedema. Exposure could cause death. Medical observation is indicated.
• Physical properties: bp 66 °C; d 1.273 g cm?3.
• Uses: Methyltrichlorosilane is used in production of methyl silicone resins, its vapor reacts with water on surfaces to give a thin layer of methylpolysiloxane which make it a water-repellent film. A combination of methyltrichlorosilane and sodium iodide can be used to cleave carbon-oxygen bonds such as methyl ethers. It is used as a precursor for forming various cross-linked siloxane polymers. Trichloromethylsilane is the starting material for the production of pure silicon for manufacture of semiconductors and optical fibers. Methyltrichlorosilane is widely used as precursor to organosilicon compounds; silylating agent and Lewis acid. MeSiCl3 is an effective Lewis acid in the condensation of carboxylic acids with alcohols and amines.

Technology Process of Methyltrichlorosilane

There total 171 articles about Methyltrichlorosilane which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 86.5%

silicon (7440-21-3) → Methyltrichlorosilane (75-79-6) + tetrachlorosilane (10026-04-7,53609-55-5) + trichlorosilane (10025-78-2) + dimethylsilicon dichloride (75-78-5,30107-43-8)

Guidance literature:

With methylene chloride; copper; In neat (no solvent); mixt. of CH3Cl/N2 (2:5) and Si-Cu (9:1) at 300°C;;

Reference yield: 72.0%

silicon (7440-21-3) → Methyltrichlorosilane (75-79-6) + tetrachlorosilane (10026-04-7,53609-55-5)

Guidance literature:

With methylene chloride; In neat (no solvent); Si and a mixt. of CH3Cl and HCl (3:1) at 350°C;;

Reference yield:

2-(methyldichlorosilyl)thiophene (18243-72-6) → 2-thienyl chloride (96-43-5) + 2,5-diclorothiophene (3172-52-9,173777-89-4) + Methyltrichlorosilane (75-79-6)

Guidance literature:

With chlorine; iron(III) chloride; at 20 ℃; for 5h; Product distribution; other temperatures; various reaction times; other reagents: SO₂Cl₂, antimony trichloride, iodine.;

upstream raw materials:

methyl bromide

ethyltrichlorosilane

methylene chloride

methane

Downstream raw materials:

meSi(Oet-2-Cl)3

chloromethylmethyldichlorosilane

chlorodimethoxymethylsilane

Methyltrimethoxysilan

Refernces

• 1、 -. "METHOD FOR THE DEHYDROGENATION OF DICHLOROSILANE". Paragraph 0091. . Retrieved 2021/06/22.
• 2、 -. "Method for preparing methylchlorosilanes". Paragraph 0040-0056. . Retrieved 2020/10/29.