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Sodiumhexamethyldisilazane CAS :1070-89-9 (CAS :1070-89-9)

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    Trimethylchlorosilane (TMCS) CAS :75-77-4

    Name: Chlorotrimethylsilane CAS number: 75-77-4 Molecular formula: C3H9ClSi Molecular weight: 108.64 EINECS number: 200-900-5 Mol file: 75-77-4.mol

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    Trimethylethoxysilane CAS :1825-62-3

    Name: Ethoxytrimethylsilane CAS number: 1825-62-3 Molecular formula: C5H14OSi Molecular weight: 118.25 EINECS number: 217-370-6 Mol file: 1825-62-3.mol

  • Dimethyldimethoxysilane CAS1112-39-6 DMDMS

    Dimethyldimethoxysilane CAS1112-39-6 DMDMS

    Specification English name: Dimethyldimethoxysilane CAS number: 1112-39-6 Molecular formula: C4H12O2Si Molecular weight: 120.22 EINECS number: 214 189 4 Mol file: 1112-39-6.mol Applications As a structural control agent, chain extender, and filler treatment agent, it is widely used in the treatment of organic silica gel and white carbon black Purpose As a structural control agent, chain extender, and filler treatment agent, it is widely used in the treatment of organic silica gel and white carbon black. This product is used as a structural control agent and chain extender to improve mechanical processing performance, extend the storage time of rubber blends, and can replace hydroxyl silicone oil for use. Widely used in the treatment of organic silicone and white carbon black Purpose Dimethyldimethoxysilane is used as a structural control agent and chain extender to improve mechanical processing performance, extend the storage time of rubber blends, and can replace hydroxy silicone oil....

  • Iodotrimethylsilane CAS:16029-98-4 (TMIS)

    Iodotrimethylsilane CAS:16029-98-4 (TMIS)

    Properties of trimethyliodosilane Melting point<0 ° C Boiling point 106 ° C (lit.) Density 1.406 g/mL at 25 ° C (lit.) Refractive index n20/D 1.471 (lit.) Flash point − 25 ° F Storage conditions -20 ° C Solubility Reacts Form Liquid Specific gravity 1.47 Clear colors to reddish Water solubility reactions Sensitivity: Moisture&Light Sensitivity Hydrolysis sensitivity 8: Reacts quickly with moisture, water, protoc solvents BRN 1731136 Stability Sensitivity (Reactive) InchiKey CSRZQMIRAZTJOY-UHFFFFAOYSA-N CAS Database 16029-98-4 (CAS DataBase Reference) NIST Chemical Information Iodotrimethylsilane (16029-98-4) EPA Chemical Information Silane, iodotrimethyl - (16029-98-4)

  • Hexamethyldisilane CAS:1450-14-2 (HMD)

    Hexamethyldisilane CAS:1450-14-2 (HMD)

    Properties of Hexamethyldisilane Melting point 9-12 ° C (lit.) Boiling point 112-114 ° C (lit.) Density 0.715 g/mL at 25 ° C (lit.) Refractive index n20/D 1.422 (lit.) Flash point 29 ° F Storage conditions Store at<=20 ° C Sol common organic solvents; Insul H2O Form liquid Specific gravity 0.729 Colorless Insoluble in water Double in alcohol, ether and acetone Hydrolysis sensitivity 1: no significant reaction with acute systems BRN 1633463 Stability InchiKey NEXSMEBSBIABKL-UHFFFAOYSA-N CAS Database 1450-14-2 (CAS DataBase Reference) NIST Chemical Substance Information Disilane, hexagonal - (1450-14-2) EPA Chemical Substance Information Disilane, hexagonal - (1450-14-2)

  • Hexamethyldisiloxane CAS:107-46-0

    Hexamethyldisiloxane CAS:107-46-0

    Introduction:  Hexamethyldisiloxane (silicone ether, MM sealing agent) is a colorless and transparent liquid that is prone to deliquescence. Insoluble in water, soluble in various organic solvents. Used as silicone oil, silicone rubber, pharmaceuticals, gas chromatography stationary liquids, analytical reagents, hydrophobic agents, etc. Obtained by hydrolysis of trimethylchlorosilane.  The physical properties of hexamethyldisiloxane  colorless and transparent liquids. Easily deliquescent, flammable, and in contact with high heat, open flames, and strong oxidizing agents, there is a risk of combustion. Boiling point 99.5 ℃. Flash point -1.1 ℃. Relative density (d2525) 0.7606. The refractive index is 1.3750. Insoluble in water, soluble in various organic solvents.  Hexamethyldisiloxane is an important primary organic silicon raw material, often used as a capping agent in the production of silicone oil, or as a cleaning agent for silicone rubber, pharmaceuticals, gas c...

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Sodiumhexamethyldisilazane CAS :1070-89-9 (CAS :1070-89-9)

Name: Sodium bis (trimethylsilyl) amide
CAS number: 1070-89-9
Molecular formula: C6H18NNaSi2
Molecular weight: 183.37
EINECS number: 213 983-8
Mol file: 1070-89-9.mol

  • Product Details

Specification

Melting point 171-175 ° C (lit.)
Boiling point 67 ° C
Density 0.904 g/mL at 25 ° C
Flash point 43 ° F
Storage conditions 2-8 ° C
Solubility in hexane, toluene, ether, terahydrofuran, benzene, and toluene
Form Liquid
Specific gravity 0.9
Color Clear orange to brown

Applications

Bis (trimethylsilyl) amino sodium (NaHMDS) is a representative of homologous compounds, as well as bis (trimethylsilyl) amino lithium (LiHMDS) and bis (trimethylsilyl) amino potassium (KHMDS). They are widely used strong base reagents with large steric hindrance in organic synthesis, and the bis (trimethylsilyl) amino group has a pKa=29.5 in tetrahydrofuran. Compared with diisopropylamino lithium (LDA), it has weaker alkalinity, but is very convenient to operate and use. It has good solubility in most organic solvents, and the temperature range used is wide, and its reaction ability can be adjusted from -78 ℃ to the reflux temperature of toluene. Its chemical reactivity is very similar to LDA and is often used to generate carbon negative ions and enol ions.
application
NaHMDS is widely used to neutralize C-H type acids. For example, some typical examples:
Deprotonating ketones and esters to obtain their enol derivatives.
By dehydrohalogenating CH2X2 (X=Br, I), halogenated carbenes in the form of CHBr and CHI were obtained. These carbene compounds can be added to olefins to obtain cyclopropane compounds containing substituents.
Prepare Georg Wittig reagent by deprotonation of quaternary ammonium salts.
Deprotonation of cyanohydrin.
NaHMDS can also serve as a neutralizing base for N-H type acids.
Purpose
Non nucleophilic strong base

Package: 200kg/drum

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