Tetramethoxysilane, 98%, Thermo Scientific Chemicals

Description

Tetramethoxysilane is used in corrosion resistant coatings and in catalysts. It is also used in the production of silicone. Further, it is employed in the sol-gel synthesis of chromium-doped silicates and in the formation of hexagonal mesoporous silica layers. In addition, it is used in synthetic chemistry to prepare ketals and acetals from ketones and aldehydes respectively.

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
Tetramethoxysilane is used in corrosion resistant coatings and in catalysts. It is also used in the production of silicone. Further, it is employed in the sol-gel synthesis of chromium-doped silicates and in the formation of hexagonal mesoporous silica layers. In addition, it is used in synthetic chemistry to prepare ketals and acetals from ketones and aldehydes respectively.

Solubility
Miscible with ethanol and organic solvents. Immiscible with water.

Notes
Moisture sensitive. Incompatible with oxidizing agents, acids and bases.

Specifications

Chemical Identifiers

• CAS: 681-84-5
• Molecular Formula: C4H12O4Si
• Molecular Weight (g/mol): 152.22
• MDL Number: MFCD00008341
• InChI Key: LFQCEHFDDXELDD-UHFFFAOYSA-N
• Synonym: tetramethoxysilane, tetramethyl orthosilicate, methyl silicate, tmos, methyl orthosilicate, methyl silicate 39, silane, tetramethoxy, silicic acid, tetramethyl ester, methyl silicate 28, tetramethylorthosilicate
• PubChem CID: 12682
• IUPAC Name: tetramethyl silicate
• SMILES: CO[Si](OC)(OC)OC

• Boiling Point: 121°C to 122°C
• Melting Point: 4°C to 5°C
• Quantity: 100 g
• UN Number: UN2606
• Beilstein: 1699658
• Flash Point: 26°C (78°F)
• Solubility Information: Miscible with ethanol and organic solvents. Immiscible with water.
• Formula Weight: 152.22
• Percent Purity: 98%
• Odor: Ether-like
• Refractive Index: 1.368
• Sensitivity: Moisture sensitive
• Density: 1.032
• Chemical Name or Material: Tetramethoxysilane

Safety and Handling

Signal Word

• Danger

Hazard Category

• Acute toxicity Category 1
• Serious eye damage/eye irritation Category 1
• Flammable liquid Category 3
• Skin corrosion/irritation Category 2

Hazard Statement

• H226-Flammable liquid and vapour.
• H315-Causes skin irritation.
• H318-Causes serious eye damage.
• H330-Fatal if inhaled.

Precautionary Statement

• P210-Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
• P280-Wear protective gloves/protective clothing/eye protection/face protection.
• P303+P361+P353-IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/ shower.
• P304+P340-IF INHALED: Remove person to fresh air and keep comfortable for breathing.
• P305+P351+P338-IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
• P310-Immediately call a POISON CENTER/doctor/.

RUO – Research Use Only