Methyltrimethoxysilane (1185-55-3),Methyltrimethoxysilane (1185-55-3) Manufacturers & Suppliers,Synthesis,MSDS

Basic information

Name:
Methyltrimethoxysilane
CAS No.:
1185-55-3
Molecular Structure:
Formula:
C₄H₁₂O₃Si
Molecular Weight:
136.25
Deleted CAS:
106153-30-4|120250-60-4
Synonyms:
(Trimethoxysilyl)methane;Silane,trimethoxymethyl-;Dynasylan MTMS;Glasca B;Methylsilicon trimethoxide (MeSi(OMe)3);NUCSilicone A 163;Silquest A 163;Silquest A 1630;Trimethoxymethylsilane;Methyltrimethoxysilane, Trimethoxy methyl silane;
EINECS:
214-685-0
Density:
0.911 g/cm³
Melting Point:
<-70 ºC
Boiling Point:
102.5 ºC at 760 mmHg
Flash Point:
11.1 ºC
Solubility:
decomposes in water
Appearance:
colourless liquid
Hazard Symbols:
F
Risk Codes:
11
Safety Description:
16 Details
Transport Information:
UN 1993 3/PG 2

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Chemistry

IUPAC Name: Trimethoxy(methyl)silane
Molecular Formula: C₄H₁₂O₃Si
Molecular Weight: 136.22 g/mol
SMILES: O(C)[Si](OC)(OC)C Copy
InChI: InChI=1/C4H12O3Si/c1-5-8(4,6-2)7-3/h1-4H3
EINECS: 214-685-0
Classification Code: Organometallic; Skin / Eye Irritant
Product Categories: Alkyl; Organics; Silicone series; Functional Materials; Si (Classes of Silicon Compounds); Silane Coupling Agents; Silane Coupling Agents (Intermediates); Si-O Compounds; Trialkoxysilanes; Alkoxy Silanes; Crosslinkers; Crosslinking Agents
storage temperature: 2-8 °C
Stability: Stable, but moisture sensitive. Highly flammable. Incompatible with water, strong acids, strong oxidizing agents.
Water Solubility: decomposes
Sensitive: Moisture Sensitive
Index of Refraction: 1.379
Molar Refractivity: 34.53 cm³
Molar Volume: 149.3 cm³Surface Tension: 18.4 dyne/cm
Density: 0.911 g/cm³
Flash Point: 11.1 °C
Enthalpy of Vaporization: 32.75 kJ/mol
Boiling Point: 102.5 °C at 760 mmHg
Melting Point: <-70 °C
Vapour Pressure of Methyltrimethoxysilane (CAS NO.1185-55-3): 38.8 mmHg at 25 °C

Toxicity Data With Reference

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
rabbit	LD	skin	> 10mL/kg (10mL/kg)		Union Carbide Data Sheet. Vol. 1/17/1972,
rat	LD50	oral	12300uL/kg (12.3mL/kg)		Union Carbide Data Sheet. Vol. 1/17/1972,

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

Mildly toxic by ingestion. A skin and eye irritant. When heated to decomposition it emits acrid smoke and fumes.
Hazard Codes: F
Risk Statements: 11
R11:Highly flammable.
Safety Statements: 16
S16:Keep away from sources of ignition.
RIDADR: UN 1993 3/PG 2
WGK Germany: 3
RTECS: VV4650000
HazardClass: 3
PackingGroup of Methyltrimethoxysilane (CAS NO.1185-55-3): II

Specification

Methyltrimethoxysilane (CAS NO.1185-55-3), its Synonyms are Silane, methyltrimethoxy- ; Silane, trimethoxymethyl- ; Trimethoxymethylsilane ; Union carbide A-163 . It is colorless clear liquid.