Methyltrimethoxysilane, 97%, Thermo Scientific Chemicals

Product Code	Brand	Quantity
11405627	Thermo Scientific Alfa Aesar B23594.AK	250 mL
11495617	Thermo Scientific Alfa Aesar B23594.AU	1000 mL

Description

Methyltrimethoxysilane is used as an acid scavenger, for example in the formation of substituted azulenes from allenylsilanes and tropyl­ium tetrafluoroborate.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
Methyltrimethoxysilane is used as an acid scavenger, for example in the formation of substituted azulenes from allenylsilanes and tropyl­ium tetrafluoroborate.

Solubility
Decomposes in water.

Notes
Moisture Sensitive. Store under dry inert gas. Store away from moisture, strong bases and oxidizing agents. Protect from humidity and water.

Chemical Identifiers

• CAS: 1185-55-3
• Molecular Weight (g/mol): 136.222
• InChI Key: BFXIKLCIZHOAAZ-UHFFFAOYSA-N
• PubChem CID: 14456
• SMILES: CO[Si](C)(OC)OC

• Molecular Formula: C4H12O3Si
• MDL Number: MFCD00008342
• Synonym: methyltrimethoxysilane, trimethoxy methyl silane, silane, trimethoxymethyl, union carbide a-163, silane, methyltrimethoxy, methyl trimethoxysilane, silane a-163, dynasylan mtms, unii-0hi0d71mci, methyl-trimethoxysilane
• IUPAC Name: trimethoxy(methyl)silane

Specifications

• Boiling Point: 102°C to 103°C
• Molecular Formula: C4H12O3Si
• UN Number: UN1993
• Flash Point: 9°C (48°F)
• Solubility Information: Decomposes in water.
• SMILES: CO[Si](C)(OC)OC
• Molecular Weight (g/mol): 136.222
• Formula Weight: 136.23
• Refractive Index: 1.37
• Density: 0.955

• CAS: 1185-55-3
• MDL Number: MFCD00008342
• Beilstein: 1736151
• Synonym: methyltrimethoxysilane, trimethoxy methyl silane, silane, trimethoxymethyl, union carbide a-163, silane, methyltrimethoxy, methyl trimethoxysilane, silane a-163, dynasylan mtms, unii-0hi0d71mci, methyl-trimethoxysilane
• InChI Key: BFXIKLCIZHOAAZ-UHFFFAOYSA-N
• IUPAC Name: trimethoxy(methyl)silane
• PubChem CID: 14456
• Percent Purity: 97%
• Sensitivity: Moisture sensitive
• Chemical Name or Material: Methyltrimethoxysilane

Safety and Handling

GHS H Statement
H225-H315-H319-H335
Highly flammable liquid and vapour.
Causes skin irritation.
Causes serious eye irritation.
May cause respiratory irritation.

P210-P233-P235-P240-P241-P242-P243-P261-P264b-P271-P280-P303+P361+P353-P304+P340-P305+P351+P338-P312-P332+P313-P363-P370+P378q-P501c

H225-H315-H319-H335

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Recommended Storage : Ambient temperatures

Product Identifier

• Methyltrimethoxysilane

Signal Word

• Danger

Hazard Category

• Serious eye damage/eye irritation Category 2
• Flammable liquid Category 2
• Skin corrosion/irritation Category 2
• Specific target organ toxicity Category 3

Hazard Statement

• H225-Highly flammable liquid and vapour.
• H315-Causes skin irritation.
• H319-Causes serious eye irritation.
• H335-May cause respiratory irritation.

Precautionary Statement

• P210-Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
• P240-Ground/bond container and receiving equipment.
• P261-Avoid breathing dust/fume/gas/mist/vapours/spray.
• P280-Wear protective gloves/protective clothing/eye protection/face protection.
• P302+P352-IF ON SKIN: Wash with plenty of water/soap.
• P305+P351+P338-IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Supplemental information

• MIXTURE LIST-Contains : Methyltrimethoxysilane

RUO – Research Use Only