ChemicalBook CAS DataBase List Methyltrimethoxysilane

Methyltrimethoxysilane synthesis

12synthesis methods

Product Name:Methyltrimethoxysilane
CAS Number:1185-55-3
Molecular formula:C4H12O3Si
Molecular Weight:136.22

Methyltrimethoxysilane is usually prepared from methyltrichlorosilane and methanol:
CH3SiCl3 + 3 CH3OH → CH3Si(OCH3)3 + 3 HCl

75-54-7 Synthesis

75-54-7
187 suppliers
$32.47/25G

67-56-1 Synthesis

67-56-1
792 suppliers
$9.00/25ml

1185-55-3
485 suppliers
$6.00/25g

Yield:1185-55-3 80.2%

Reaction Conditions:

at 35; for 7 h;Inert atmosphere;Large scale;Temperature;

Steps:

2 Example 2

Methyltrimethoxysilane was prepared according to the following procedure:
A, alcoholysis dechlorination dehydrogenation
At room temperature,207 kg of methanol was continuously pumped into a reaction vessel containing 250 kg of methylhydrogen dichlorosilane using a metering pump,Feeding time 4h;After the addition of methanol,To 0.2m3 / h speed access to N2,The temperature of the reaction solution was raised to 35 ± 2 ° C,Dehydrochlorination dehydrogenation reaction.After 3 hours of reaction,There is no obvious acid gas escape,The reaction ends,Stop by nitrogen.
B, post-processing
The mass fraction of 29% methanol sodium methanol solution added to the reactor stirred to neutralize the reaction,Until the pH of the reaction solution reaches 8;The sodium chloride salt formed by neutralization reaction was removed by filtration,The filtrate is crude methyltrimethoxysilane.The crude methyltrimethoxysilane is subjected to atmospheric distillation,A fraction at 103 ° C was collected,That is, high purity methyltrimethoxysilane is obtained.
After weighing, the present example received 237.2 kg of methyltrimethoxysilane.

References:

CN105906661,2016,A Location in patent:Paragraph 0026; 0027; 0028; 0029; 0030; 0031; 0032-0051

75-79-6 Synthesis