18395-30-7

Basic information

• Product Name: Isobutyltrimethoxysilane
• Synonyms: CI7810;Dynasylan IBTMO;Silane, trimethoxy(2-methylpropyl)-;trimethoxy(2-methylpropyl)-silan;ISOBUTYLTRIMETHOXYSILANE;Trimethoxy(2-methylpropyl)silane;Isobutyltrimethoxysilane Prosil R 178;Isobutyltrimethoxysilan
• CAS NO: 18395-30-7
• Molecular Formula: C₇H₁₈O₃Si
• Molecular Weight: 178.3
• EINECS: 242-272-5
• Product Categories: Alkoxy Silanes;Hydrophobing Agents;Organosilicon;SilanesOrganometallic Reagents;Solution Deposition Precursors;Trialkoxysilanes;RSi(OR)3Self Assembly&Contact Printing;POSS? Precursors and Intermediates;Self-Assembly Materials;Silsesquioxanes: POSS? Nanohybrids
• Mol File: 18395-30-7.mol

Chemical Properties

• Melting Point: <0°C
• Boiling Point: 154 °C(lit.)
• Flash Point: 103 °F
• Appearance: Clear to straw liquid with mild odor
• Density: 0.93 g/mL at 25 °C(lit.)
• Vapor Pressure: 4.17mmHg at 25°C
• Refractive Index: n20/D 1.396(lit.)
• Storage Temp.: 2-8°C
• Sensitive: Moisture Sensitive
• BRN: 2233976
• CAS DataBase Reference: Isobutyltrimethoxysilane(CAS DataBase Reference)
• NIST Chemistry Reference: Isobutyltrimethoxysilane(18395-30-7)
• EPA Substance Registry System: Isobutyltrimethoxysilane(18395-30-7)

Safety Data

• Hazard Codes: Xn
• Statements: 10-20/22-36/37/38
• Safety Statements: 7-16-24-26-45-36/37/39
• RIDADR: UN 1993 3/PG 3
• WGK Germany: 1
• F: 21
• TSCA: Yes
• HazardClass: 3
• PackingGroup: III
• Hazardous Substances Data: 18395-30-7(Hazardous Substances Data)

Usage

Uses

Used in Gold Film Preparation:
Isobutyltrimethoxysilane is used as a silane precursor for the preparation of gold films by absorption and adsorption on modified substrates. This application is particularly useful in industries that require thin and uniform gold films for various purposes.
Used in Synthesis of Xerogels:
Isobutyltrimethoxysilane is also utilized as a silane precursor in the synthesis of xerogels. Xerogels are porous materials with a wide range of applications, including catalysis, drug delivery, and energy storage. The use of Isobutyltrimethoxysilane in their synthesis contributes to the development of advanced materials with improved properties and performance.

Flammability and Explosibility

Flammable

InChI:InChI=1/C7H18O3Si/c1-7(2)6-11(8-3,9-4)10-5/h7H,6H2,1-5H3

Upstream product

• 18165-87-2 isobutylsilane 
• 2487-90-3 trimethoxysilane 
• 563-47-3 3-Chloro-2-methylpropene 
• 681-84-5 tetramethylorthosilicate 
• 926-62-5 isobutylmagnesium bromide 
• 78-77-3 Isobutyl bromide 

Downstream Products

• 307531-92-6 1,3,5,7,9,11,14-heptaisobutyltricyclo[7.3.3.15,11]heptasiloxane-endo-3,7,14-triol 

Relevant articles and documents

Siloxanes from the hydrolysis of isopropyltrimethoxysilane

The behavior of isopropyltrimethoxysilane (1) in the presence one equivalent of water and a dibutyltin dilaurate catalyst has been investigated.Under these conditions, partial hydrolysis of the methoxy groups of 1 occurred, followed by condensation reactions leading to the formation of low molecular-weight oligomers.Disiloxane 4, trisiloxane 6 and cyclic siloxanes 7 and 8 have been isolated and fully characterized.Transient reaction intermediates silanol 3 and hydroxydisiloxane 5 have been characterized spectroscopically.The time evolution of these species was followed by gas chromatography and 29Si NMR.A reaction scheme for the hydrolytic condensation of 1 is proposed to accommodate these results. Keywords: Silicon; Siloxanes; Hydrolysis; Nuclear magnetic resonance

COSMETIC TREATMENT METHOD COMPRISING THE APPLICATION OF A COATING BASED ON AN AEROGEL COMPOSITION OF LOW BULK DENSITY

The present invention relates to a cosmetic treatment method comprising the formation of a coating on keratin fibres characterized in that it comprises: 1) the preparation of an aerogel precursor composition comprising:—at least one organic solvent chosen from acetone, C1-C4 alcohols, C1-C6 alkanes, C1-C4 ethers, which may or may not be perfluorinated, and mixtures thereof and at least one precursor compound that contains:—at least one atom chosen from silicon, titanium, aluminium and zirconium,—at least one hydroxyl or alkoxy function directly attached to the atom chosen from silicon, titanium, aluminium and zirconium by an oxygen atom, and,—optionally an organic group directly attached to the atom chosen from silicon, titanium, aluminium and zirconium by a carbon atom, 2) the removal of the solvent or solvents resulting in the formation of an aerogel composition having a bulk density less than or equal to 0.35 g/cm3, 3) the application to the keratin fibres of the aerogel composition resulting from step 2) or of the aerogel precursor composition resulting from step 1). Advantageously, the molar ratio between the precursor compounds and the solvent is at most 1/20.

PROCESS FOR MAKING HALOORGANOALKOXYSILANES

A haloorganoalkoxysilane is prepared by reacting an olefinic halide with an alkoxysilane in which the alkoxy group(s) contain at least two carbon atoms in a reaction medium to which has been added a catalytically effective amount of ruthenium-containing catalyst and a reaction-promoting effective amount of an electron-donating aromatic compound promoter. The process can be used to prepare, inter alia, chloropropyltriethoxysilane, which is a key intermediate in the manufacture of silane coupling agents.

Process for making haloorganoalkoxysilanes

A haloorganoalkoxysilane is prepared by reacting an olefinic halide with an alkoxysilane in which the alkoxy group(s) contain at least two carbon atoms in a reaction medium to which has been added a catalytically effective amount of ruthenium-containing catalyst and a reaction-promoting effective amount of an electron-donating aromatic compound promoter. The process can be used to prepare, inter alia, chloropropyltriethoxysilane, which is a key intermediate in the manufacture of silane coupling agents.

Process for preparing low-chloride or chloride-free alkoxysilanes

A process for preparing an alkoxysilane with an acidic chloride content of less than 10 ppm by weight, comprising: reacting a chlorosilane with an alcohol in a water-free and solvent-free phase to form a product mixture containing alkoxysilane and residual acidic chloride, with removal of resultant hydrogen chloride from the product mixture, then adding liquid or gaseous ammonia, in an amount corresponding to a stoichiometric excess, based on the content of acidic chloride, to form an ammonia-containing product mixture, treating the ammonia-containing product mixture at a temperature between 10 and 50 DEG C., wherein the ammonia and acidic chloride undergo neutralization, to form a crude product, and optionally, then separating off a salt formed in the course of neutralization, from the crude product, and recovering the alkoxysilane by distilling the crude product.