ChemicalBook > CAS DataBase List > Methyltrimethoxysilane

Methyltrimethoxysilane

Product Name
Methyltrimethoxysilane
CAS No.
1185-55-3
Chemical Name
Methyltrimethoxysilane
Synonyms
MTMS;TRIMETHOXYMETHYLSILANE;Silane, trimethoxymethyl-;methyltrimethoxy-silan;D20;CM9100;Z 6070;HD-119;A-1630;KH- 131
CBNumber
CB7744411
Molecular Formula
C4H12O3Si
Formula Weight
136.22
MOL File
1185-55-3.mol
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Methyltrimethoxysilane Property

Melting point:
<-70°C
Boiling point:
102-104 °C(lit.)
Density 
0.955 g/mL at 25 °C(lit.)
vapor pressure 
2990 hPa (20 °C)
refractive index 
n20/D 1.371(lit.)
Flash point:
52 °F
storage temp. 
Store below +30°C.
form 
liquid
color 
colorless
Specific Gravity
0.955
Water Solubility 
decomposes
Hydrolytic Sensitivity
7: reacts slowly with moisture/water
Sensitive 
Moisture Sensitive
BRN 
1736151
Stability:
Stable, but moisture sensitive. Highly flammable. Incompatible with water, strong acids, strong oxidizing agents.
InChIKey
BFXIKLCIZHOAAZ-UHFFFAOYSA-N
LogP
-2.4-0.7 at 20℃
CAS DataBase Reference
1185-55-3(CAS DataBase Reference)
NIST Chemistry Reference
Silane, trimethoxymethyl-(1185-55-3)
EPA Substance Registry System
Trimethoxymethylsilane (1185-55-3)
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Safety

Hazard Codes 
F,Xi
Risk Statements 
11-43
Safety Statements 
16-24
RIDADR 
UN 1993 3/PG 2
WGK Germany 
3
RTECS 
VV4650000
Autoignition Temperature
225 °C
TSCA 
Yes
HazardClass 
3
PackingGroup 
II
HS Code 
29310095
Toxicity
LD50 orally in Rabbit: 11808 mg/kg LD50 dermal Rabbit > 9600 mg/kg
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H225Highly Flammable liquid and vapour

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P240Ground/bond container and receiving equipment.

P241Use explosion-proof electrical/ventilating/lighting/…/equipment.

P242Use only non-sparking tools.

P243Take precautionary measures against static discharge.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
8.14178
Product name
Trimethoxymethylsilane
Purity
for synthesis
Packaging
250ML
Price
$59.2
Updated
2024/03/01
Sigma-Aldrich
Product number
246174
Product name
Trimethoxymethylsilane
Purity
98%
Packaging
250ml
Price
$47.5
Updated
2024/03/01
Sigma-Aldrich
Product number
246174
Product name
Trimethoxymethylsilane
Purity
98%
Packaging
1l
Price
$154
Updated
2024/03/01
TCI Chemical
Product number
M0660
Product name
Trimethoxy(methyl)silane
Purity
>98.0%(GC)
Packaging
25mL
Price
$16
Updated
2024/03/01
TCI Chemical
Product number
M0660
Product name
Trimethoxy(methyl)silane
Purity
>98.0%(GC)
Packaging
100mL
Price
$24
Updated
2024/03/01
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Methyltrimethoxysilane Chemical Properties,Usage,Production

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

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.

Uses

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.

Methyltrimethoxysilane Preparation Products And Raw materials

Raw materials

Methyltrichlorosilane

Preparation Products

Dimethoxymethylphenylsilane
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View Lastest Price from Methyltrimethoxysilane manufacturers

Hebei Zhuanglai Chemical Trading Co.,Ltd
Product
Methyltrimethoxysilane 1185-55-3
Price
US $99.00-35.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20ton
Release date
2024-05-11
Hebei Weibang Biotechnology Co., Ltd
Product
Methyltrimethoxysilane 1185-55-3
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
500000kg
Release date
2024-11-01
Hebei Chuanghai Biotechnology Co,.LTD
Product
Methyltrimethoxysilane 1185-55-3
Price
US $10.00/KG
Min. Order
1KG
Purity
99.8%
Supply Ability
100tons
Release date
2024-08-23

1185-55-3, MethyltrimethoxysilaneRelated Search:

Methyltriacetoxysilane Methyltriethoxysilane SILANE COUPLING AGENT Methyltrichlorosilane Methyltris(methylethylketoxime)silane 3-Methacryloxypropyltrimethoxysilane 3-Aminopropyltriethoxysilane Vinyltriacetoxysilane Triethoxyvinylsilane Trimethoxysilylpropanethiol N-[3-(Trimethoxysilyl)propyl]ethylenediamine Methyltrimethoxysilane 3-Chloropropyltriethoxysilane Vinyltrimethoxysilane Vinyl tris(2-methoxyethoxy) silane Phenyltriethoxysilane Trimethoxy[2-(7-oxabicyclo[4.1.0]hept-3-yl)ethyl]silane 3-Chloropropyltrimethoxysilane

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  • silanea-163
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  • Trimethoxymethylsilane,Methyltrimethoxysilane
  • Trimethoxymethylsilane,Dow Corning product Z-6070, Methyltrimethoxysilane
  • TrimethoxymethyL
  • Methyltrimethoxysilane, AcroSeal, 97%
  • Dow Corning(R) product Z-6070
  • Trimethoxymethylsilane deposition grade, >=98%
  • Methyltrimethoxysilane, Trimethoxy methyl silane
  • MethyltriMethoxysilane, 97% 1LT
  • MethyltriMethoxysilane, 97% 250ML
  • MethyltriMethoxysilane, 97% 50ML
  • MethyltriMethoxysilane, 97% 5ML
  • HD-119
  • MethyltriMethoxysilane, 97%, AcroSeal
  • TRIMETHOXYMETHYLSILANE FOR SYNTHESIS
  • TriMethoxyMethylsilane puruM, >=98.0% (GC)
  • Trimethoxymethylsila
  • Alkoxy crosslinker A-1630
  • DC Z-6070
  • Trimethoxysilylmethane
  • A-1630
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  • Trimethoxy(methyl)silane,98%
  • Methyl silicic acid
  • KH- 131
  • Silane crosslinking agent (d-20)
  • Methyltrimethoxysilane (MTM)
  • D20
  • 1185-55-3
  • CH3SiCH3O3
  • CH3SiOCH33
  • CH3CH3O3Si
  • C4H12O3Si
  • Organometallic Reagents