341436

Tetramethyl orthosilicate

≥99%

• Synonyme(s) : Tetramethoxysilane
• Formule linéaire : Si(OCH₃)₄
• Numéro CAS: 681-84-5
• Poids moléculaire : 152.22
• Beilstein: 1699658
• Numéro CE : 211-656-4
• Numéro MDL: MFCD00008341
• Code UNSPSC : 12352103
• ID de substance PubChem : 24860943
• Nomenclature NACRES : NA.23

Propriétés

• Densité de vapeur: 5.25 (vs air)
• Niveau de qualité: 200
• Pression de vapeur: 13 hPa ( 20 °C)
• Essai: ≥99%
• Forme: liquid
• Indice de réfraction: n20/D 1.368 (lit.)
• pb: 121-122 °C (lit.)
• Pf: −4 °C (lit.)
• Densité: 1.023 g/mL at 25 °C (lit.)
• Chaîne SMILES: CO[Si](OC)(OC)OC
• InChI: 1S/C4H12O4Si/c1-5-9(6-2,7-3)8-4/h1-4H3
• Clé InChI: LFQCEHFDDXELDD-UHFFFAOYSA-N

Description

Description générale

Tetramethyl orthosilicate is a colorless organosilicon compound consisting of four methoxy groups bonded to a silicon atom. On hydrolysis, it produces silicon dioxide and methanol. It has been widely used in catalysis, synthesis of nanomaterials, ceramics, zeolites, and coating materials.[1][2]

Application

Tetramethyl orthosilicate can be used:

• As a precursor to synthesize organic-inorganic coating materials by sol-gel processing method.[1]
• As an efficient reagent for direct amidation of aliphatic and aromatic carboxylic acids with amines and anilines.[3]
• As a precursor to fabricate SiO₂ nanocomposite films by chemical vapor deposition(CVD) method.[2]
• As a selective catalyst ofC3-methylation of indole.[4]

Used in the sol-gel synthesis of chromium-doped silicates and in the formation of hexagonal mesoporous silica layers.

Informations sur la sécurité

• Pictogrammes: GHS02,GHS06,GHS05
• Mention d'avertissement: Danger
• Mentions de danger: H226,H315,H318,H330
• Conseils de prudence: P210 - P233 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Classification des risques: Acute Tox. 1 Inhalation - Eye Dam. 1 - Flam. Liq. 3 - Skin Irrit. 2
• Code de la classe de stockage: 3 - Flammable liquids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): 78.8 °F - closed cup
• Point d'éclair (°C): 26 °C - closed cup
• Équipement de protection individuelle: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter