1185-55-3 Usage
Description
Trimethoxy (methyl) silane is an organosilicon compound. It can be
used as a crosslinker in the preparation of polysiloxane polymers.
It can also be used as an acid scavenge used in the formation of
substituted azulenes from allenylsilanes and tropyl?ium
tetrafluoroborate. It can also be used as the precursor for
synthesis of flexible silica aerogels.
Chemical Properties
Colorless clear liquid
Uses
Different sources of media describe the Uses of 1185-55-3 differently. You can refer to the following data:
1. Methyltrimethoxysilane(MTMS) in combination with iron nitrate altered the pore structure dramatically. As the Crosslinking agent of RTV silicone rubber and glass fiber surface treatment agent and talk to agents outside of reinforced plastic laminated products in order to improve the mechanical strength, heat resistance, moisture resistance.
Methyltrimethoxysilane is used as an acid scavenger, for example in the formation of substituted azulenes from allenylsilanes and tropyl-ium tetrafluoroborate.
2. Methyltrimethoxysilane is a reagent used in they synthesis of electronic materials and organometallic compounds. Used in the coating of carbon-fiber surfaces, as well as in the synthesis of nanocomposites.
Application
Methyltrimethoxysilane is highly miscible with standard organic solvents, such as alcohols, hydrocarbons and acetone. It is practically insoluble in neutral water and reacts only slowly to form silanols and higher condensation products. Addition of a hydrolytic catalyst (inorganic/organic acids, ammonia or amines) accelerates the hydrolysis of Methyltrimethoxysilane substantially.As a Filler Modifier, Methyltrimethoxysilane is used mainly to render a wide range of surfaces and materials water repellent (e.g. mineral fillers, pigments, glass, cardboard). It may be used pure or in solution to treat fillers, using suitable mixing equipment. It may be necessary to first pre-treat the substrate with water and/or a catalyst. It is also used in the production of silicone resins and condensation-curing silicone rubber, used as an important component in sol-gel systems.As one of the most common Alkoxy Crosslinkers, Methyltrimethoxysilane has high reactivity that precedes by nucleophilic substitution usually in the presence of acid or base catalysts.
Preparation
Methyltrimethoxysilane is usually prepared from methyltrichlorosilane and methanol:CH3SiCl3 + 3 CH3OH → CH3Si(OCH3)3 + 3 HCl
General Description
Trimethoxymethylsilane (MTM) is an organosilicon compound widely used as a precursor for the preparation of silica-based materials, which finds the applications in various fields. Particularly in molecular assembly, linking nano building blocks, and selective synthesis oligosiloxane compounds. It can also be utilized as a crosslinker in the synthesis of polysiloxane polymers.
Flammability and Explosibility
Flammable
Purification Methods
Methyl trimethoxysilane [1185-55-3] M 136.2, b 102o/760mm, d 4 1.3687, n D 1.3711. Likely impurities are 1,3-dimethyltetramethoxy disiloxane (b 31o/1mm) and cyclic polysiloxanes, see methyl triethoxysilane. [Tamborski & Post J Org Chem 16 1400 1952, Seyferth & Rochow J Org Chem 20 250 1955, Beilstein 4 IV 4203.]
References
https://en.wikipedia.org/wiki/Methyltrimethoxysilane https://www.alfa.com/zh-cn/catalog/B23594/
Rao, A. V., et al. "Synthesis of flexible silica aerogels using methyltrimethoxysilane (MTMS) precursor." Journal of Colloid & Interface Science 300.1(2006):279-85.
Bhagat, Sharad D., et al. "Methyltrimethoxysilane based monolithic silica aerogels via ambient pressure drying." Microporous & Mesoporous Materials 100.1–3(2007):350-355.
Check Digit Verification of cas no
The CAS Registry Mumber 1185-55-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,1,8 and 5 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1185-55:
(6*1)+(5*1)+(4*8)+(3*5)+(2*5)+(1*5)=73
73 % 10 = 3
So 1185-55-3 is a valid CAS Registry Number.
InChI:InChI=1/C4H12O3Si/c1-5-4(8,6-2)7-3/h1-3,8H3
1185-55-3Relevant articles and documents
Janzen et al.
, p. 2719 (1968)
Some regularities of chlorosilanes etherification
Belyakova,Komarov,Bykovchenko,Ershov,Chernyshev,Storozhenko
, p. 1650 - 1655 (2009)
The influence of reagents, solvent polarity, and temperature on the etherification of chlorosilanes ClCH2SiCl3, VinSiCl 3, PrSiCl3, and Ph3SiCl with ethanol was studied. Influence of reaction temperature on the ratio of the synthesized alkoxysilane and related side-product siloxane is revealed. Use of excess alcohol is shown to increase the content of siloxane. Introduction of FeCl 3 does not affect the synthesis. Solvents are shown to influence the reaction rate: the rate constant increases with increasing ε parameter of the solvent. The rate constant of etherification of chlorosilanes with ethanol falls in the series: ClCH2SiCl3 > VinSiCl3 > PrSiCl3. An explanation of the regularities is suggested.
TWO-COMPONENT SYSTEM FOR SMOOTHING AND CARE OF HAIR
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, (2022/01/23)
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A process for the production of alkoxy silane (by machine translation)
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Paragraph 0035; 0036, (2017/07/15)
The invention belongs to the field of chemical industry, relates to a production process of alkoxy silane, in order to improve the purity of the product. The production process comprises the following steps: A, eliminates the water mellowly enters into the reaction equipment, an esterification reaction with the organic silane; B, after the esterification reaction of the material entering the evaporation apparatus, and distilled to remove the material in a small amount of alcohol; C, in and after the distillation product to get the alkoxysilane; production process the start-up phase, the steps of adding excessive mellow A, the reaction apparatus in the backflow of appears mellowly; in the case of when the mellow backflow, add organochlorosilane, joins the quantity mellowly is reduced to the amount of consumption by the reaction. The invention relates to a simple process for the production of the realization of the alkoxy silane, in particular methyl triethoxy silane production. Relative to the other process reduces the rectifying tower, the circulation evaporator replace, increased water removal system and in the fixed-bed and system. In the reaction process through the control of the temperature, pressure and feed rate, the obtained alkoxy silane in the HCl content of 10 ppm following, purity 99.0% wt or more. (by machine translation)