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Dichlorodimethylsilane
Dichlorodimethylsilane

Dichlorodimethylsilane

Price USD1.00
Packge 1kg
  • Min. Order:1kg
  • Supply Ability:100KG
  • Time:2019-07-06

Product Details

  • Product NameDichlorodimethylsilane
  • CAS No.75-78-5
  • EINECS No.200-901-0
  • MFC2H6Cl2Si
  • MW129.06
  • InChIKeyLIKFHECYJZWXFJ-UHFFFAOYSA-N
  • Appearanceliquidcolorless
  • Water Solubility reacts
  • Melting point -76 °C
  • storage temp. Store below +30°C.
  • density 1.333 g/mL at 20 °C
  • Boiling point 70 °C(lit.)

AD68

Dichlorodimethylsilane Basic information
Description History Preparation Applications
Product Name: Dichlorodimethylsilane
Synonyms: (CH3)2SiCl2;dichlorodimethyl-silan;Dichlorodimethylsilicon;dimethyldichlorosilicane;Dimethyl-dichlorsilan;dimethyl-dichlorsilan(czech);Dimethyldichlorsilane;dimethylsilanedichloride
CAS: 75-78-5
MF: C2H6Cl2Si
MW: 129.06
EINECS: 200-901-0
Product Categories: Chloro;Silicon Compounds;Organics;Dichlorosilanes;Dichlorosilanes (for Polysilanes);Functional Materials;Reagent for High-Performance Polymer Research;Si (Classes of Silicon Compounds);Si-Cl Compounds;Silicon Compounds (for Synthesis);Synthetic Organic Chemistry;Chloro Silanes;organosilicon compounds;Silicone Series
Mol File: 75-78-5.mol
Dichlorodimethylsilane Structure
 
Dichlorodimethylsilane Chemical Properties
Melting point  -76 °C
Boiling point  70 °C(lit.)
density  1.333 g/mL at 20 °C
refractive index  n20/D 1.500
Fp  3 °F
storage temp.  Store at 0-5°C
form  liquid
color  colorless
explosive limit 1.75-48.5%(V)
Water Solubility  reacts
Sensitive  Moisture Sensitive
BRN  605287
Stability: Stable. Reacts violently with water and alcohols. Highly flammable. Incompatible with strong oxidizing agents, water, alcohols, caustics, ammonia.
CAS DataBase Reference 75-78-5(CAS DataBase Reference)
NIST Chemistry Reference Silane, dichlorodimethyl-(75-78-5)
EPA Substance Registry System Silane, dichlorodimethyl-(75-78-5)
 
Safety Information
Hazard Codes  Xn,Xi,F,N,C
Risk Statements  20-59-36/37/38-11-67-65-63-48/20-38-20/21-50/53-37-35-20/22-14-34
Safety Statements  60-61-62-36/37-59-45-36/37/39-26-16-7/9-2
RIDADR  UN 2924 3/PG 2
WGK Germany  3
RTECS  VV3150000
3-10-19-21
TSCA  Yes
HazardClass  3
PackingGroup  II
HS Code  29310095
Hazardous Substances Data 75-78-5(Hazardous Substances Data)
MSDS Information
Provider Language
Dichlorodimethylsilane English
SigmaAldrich English
ACROS English
ALFA English
 
Dichlorodimethylsilane Usage And Synthesis
Description

Dichlorodimethylsilane is a tetrahedral, organosilicon compound with the molecular formula Si(CH3)2Cl2. The compound is a colorless liquid at room temperature, has a pungent odor and readily reacts with water to form both cyclic and linear Si-O chains. On an industrial scale, dichlorodimethylsilane is manufactured as the main precursor to polysilane and dimethylsilicone compounds.

History

James Crafts and Charles Friedel are American chemists who first reported organosilicon compounds in 1863 by synthesizing tetraethylsilane from silicon tetrachloride and diethylzinc. Nevertheless, major progress in organosilicon chemistry occurred when Fredrick Kipping and his students reacted tetrachloride with Grignard reagents to produce diorganodichlorosilanes (R2SiCl2), which they used for their experiments. The dpemand for silicones increased in the 1930s as many aircraft companies needed better insulators for sealing materials and electric motors for aircraft engines; therefore, there was need for efficient synthesis of dichlorodimethylsilane.

Preparation

Dichlorodimethylsilane is prepared by passing methyl chloride through a heated tube packed with copper (I) chloride and ground silicon using Cu2O as the catalyst. Methyl chloride is the passed through a reactor to produce dichlorodimethylsilane.
2 CH3Cl + Si → (CH3)2SiCl2
The other products in this reaction apart from dichlorodimethylsilane include CH3)3SiCl, CH3SiHCl2, and CH3SiCl3, which can be separated fromone another by fractional distillation.

Applications

Dichlorodimethylsilane is majorly used in the production of silicones. Moreover, it is utilized in the synthesis of polysilanes, which are the main precursors to silicon carbide. Dichlorodimethylsilane can be used to coat glass to prevent the adsorption of micro-particles.

Chemical Properties Colorless to brown liquid
Uses Dichlorodimethylsilicon is a organosilicon compound and is the precursor to dimethylsilicone and polysilane compounds.
General Description A colorless fuming liquid with a pungent odor. Flash point 16°F. Vapor and liquid may cause burns. Denser than water. Vapors heavier than air.
Reactivity Profile Chlorosilanes, such as Dichlorodimethylsilane, are compounds in which silicon is bonded to from one to four chlorine atoms with other bonds to hydrogen and/or alkyl groups. Chlorosilanes react with water, moist air, or steam to produce heat and toxic, corrosive fumes of hydrogen chloride. They may also produce flammable gaseous H2. They can serve as chlorination agents. Chlorosilanes react vigorously with both organic and inorganic acids and with bases to generate toxic or flammable gases.
Health Hazard Inhalation irritates mucous membranes. Severe gastrointestinal damage may occur. Vapors cause severe eye and lung injury. Upon short contact, second and third degree burns may occur.
Fire Hazard Vapor may explode if ignited in an enclosed area. Reacts vigorously with water to generate hydrogen chloride. Hydrogen chloride and phosgene gases may be formed upon heating or in fire. Runoff to sewer may create fire or explosion hazard.
Safety Profile Poison by ingestion and intraperitoneal routes. Moderately toxic by inhalation. A skin and severe eye irritant. Violent reaction on contact with water. When heated to decomposition it emits toxic fumes of Cl-. See also CHLOROSILANES.
Purification Methods Other impurities are chlorinated silanes and methylsilanes. Fractionate it through a 3/8in diameter 7ft Stedman column (p 11) rated at 100 theoretical plates at almost total reflux. See purification of MeSiCl2. Solutions in heptane, 1,1,1-trichloroethane or 1-chloronaphthalene are used for the silanization of glassware and pipettes. [Sauer & Hadsell J Am Chem Soc 70 3590 1948, Beilstein 4 IV 4110.]
 

Company Profile Introduction

Established in 2014,Career Henan Chemical Co. is a manufacturerspecializing in the sale of fine chemicals. Mainly deals in the sales of: Pharmaceutical intermediates OLED intermediates: Pharmaceutical intermediates; OLED intermediates;

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