2943-75-1

Basic information

• Product Name: Triethoxyoctylsilane
• Synonyms: a137(couplingagent);CO9835;Dynasylan OCTEO;dynasylanocteo;n-octyltriethoaysilane(30m3);n-octyltriethoaysilane(30m35);n-octyltriethoaysilane(30m3m);n-octyltriethoaysilane(32m18)
• CAS NO: 2943-75-1
• Molecular Formula: C₁₄H₃₂O₃Si
• Molecular Weight: 276.49
• EINECS: 220-941-2
• Product Categories: Alkyl;Functional Materials;Si (Classes of Silicon Compounds);Silane Coupling Agents;Silane Coupling Agents (Intermediates);Si-O Compounds;Trialkoxysilanes;Alkoxy Silanes;Hydrophobing Agents;silane
• Mol File: 2943-75-1.mol
• Article Data: 64

Chemical Properties

• Melting Point: <-40°C
• Boiling Point: 84-85 °C0.5 mm Hg(lit.)
• Flash Point: 210 °F
• Appearance: colorless transparent liquid
• Density: 0.88 g/mL at 25 °C(lit.)
• Vapor Pressure: 0.137mmHg at 25°C
• Refractive Index: n20/D 1.417(lit.)
• Storage Temp.: Store below +30°C.
• Solubility: Acetonitrile (Slightly), Chloroform (Slightly)
• Water Solubility: reacts
• Sensitive: Moisture Sensitive
• BRN: 2325287
• CAS DataBase Reference: Triethoxyoctylsilane(CAS DataBase Reference)
• NIST Chemistry Reference: Triethoxyoctylsilane(2943-75-1)
• EPA Substance Registry System: Triethoxyoctylsilane(2943-75-1)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36-37/39
• WGK Germany: 1
• RTECS: VV6695500
• F: 10-21
• TSCA: Yes
• Hazardous Substances Data: 2943-75-1(Hazardous Substances Data)

Usage

Description

Triethoxyoctylsilane is a monomeric medium-chain alkylfunctional silane. It is a clear colourless liquid and soluble in common non-polar organic solvent. Triethoxyoctylsilane can be used as a surface modifier to generate hydrophobicity (e.g. on concrete, glass, inorganic pigments, or mineral fillers). When diluted with an appropriate solvent, it can be used in the formulation of water repellent products. Upon proper application, the formulated product will penetrate and provide water repellency by chemically reacting with the cementitious substrate. Treated substrates are hydrophobic and retain their original appearance.

Chemical Properties

Colorless transparent liquid

Uses

Triethoxy(octyl)silane is a hydrophobization agent used to limit coalescence in solid-stabilized emulsions.

General Description

Triethoxy(octyl)silane (TEOS) is an alkoxide organosilane with four ethyl ester sidechains. It is used as a self-assembled monolayer and provides a hydrophobic coating with low surface energy. The water contact angle is in the range of 150-170°.

InChI:InChI=1/C14H32O3Si/c1-5-9-10-11-12-13-14-18(15-6-2,16-7-3)17-8-4/h5-14H2,1-4H3

Upstream product

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Downstream Products

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Relevant articles and documents

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