Tetraethyl orthosilicate (TEOS) for synthesis, Sigma-Aldrich®

Supplier: Merck
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Synonyms: Tetraethoxysilane

M-Clarity™ quality level = MQ200

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Tetraethyl orthosilicate (TEOS) for synthesis, Sigma-Aldrich®
Tetraethyl orthosilicate (TEOS)
Formula: Si(OC₂H₅)₄
MW: 208.33 g/mol
Boiling Pt: 168 °C (1013 hPa)
Melting Pt: –85.5 °C
Density: 0.933 g/cm³ (20 °C)
Flash Pt: 38 °C
Storage Temperature: Ambient
MDL Number: MFCD00009062
CAS Number: 78-10-4
EINECS: 201-083-8
UN: 1292
ADR: 3,III
Merck Index: 13,03882

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Specification Test Results

Solubility (20 °C) insoluble,(slow decomposition)
Melting Point -85.5 °C
Molar Mass 208.33 g/mol
Boiling Point 168.0 °C (1013 hPa)
Vapor Pressure 10 hPa (20 °C)
Flash Point 37 °C
Explosion Limit 1.3 - 23 %(V)
Density 0.93 g/cm3 (20 °C)
pH (H2O, 20 °C) not applicable
Ignition Point 230 °C
Hazard Class 3
Hazard Class Description Flammable Liquid

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