Tetramethoxysilane, 98%

Description

CAS: 681-84-5 | C4H12O4Si | 152.22 g/mol

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: 25 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

Hazard Category	H226-H315-H318-H330-H335
Hazard Statement	GHS H Statement H330-H318-H226-H315-H335 Fatal if inhaled. Causes serious eye damage. Flammable liquid and vapor. Causes skin irritation. May cause respiratory irritation.
Precautionary Statement	P210-P233-P235-P240-P241-P242-P243-P260-P264b-P271-P280-P285-P303+P361+P353-P304+P340-P305+P351+P338-P310-P312-P332+P313-P363-P370+P378q-P501c
DOTInformation	Transport Hazard Class: 6.1; Packing Group: I; Proper Shipping Name: METHYL ORTHOSILICATE
EINECSNumber	211-656-4
RTECSNumber	VV9800000
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only