994-79-6

Basic information

• Product Name: TETRA-N-BUTYLSILANE
• Synonyms: Silane, tetrabutyl-;tetrabutyl-silan;TETRABUTYLSILANE;TETRA-N-BUTYLSILANE;tetrabutylsilicane
• CAS NO: 994-79-6
• Molecular Formula: C₁₆H₃₆Si
• Molecular Weight: 256.54
• EINECS: 213-621-9
• Mol File: 994-79-6.mol
• Article Data: 3

Chemical Properties

• Melting Point: -56°C
• Boiling Point: 230 °C
• Flash Point: 75°C
• Appearance: /
• Density: 0.799
• Vapor Pressure: 0.0025mmHg at 25°C
• Refractive Index: 1.4465
• CAS DataBase Reference: TETRA-N-BUTYLSILANE(CAS DataBase Reference)
• NIST Chemistry Reference: TETRA-N-BUTYLSILANE(994-79-6)
• EPA Substance Registry System: TETRA-N-BUTYLSILANE(994-79-6)

Safety Data

• Safety Statements: 23-24/25
• TSCA: Yes
• Hazardous Substances Data: 994-79-6(Hazardous Substances Data)

Usage

General Description

Tetra-n-butylsilane is an organosilicon compound with the formula (C4H9)4Si. It is a colorless, clear liquid that is highly flammable and has a strong odor. Tetra-n-butylsilane is commonly used as a reagent in organic synthesis, particularly in the preparation of silicon-containing compounds. It is also used as a coating material in the production of glass and as a crosslinking agent in the manufacturing of polymers. Additionally, tetra-n-butylsilane is used as a precursor for the synthesis of other organosilicon compounds, such as siloxanes and silanes. However, it is important to handle and store tetra-n-butylsilane with caution due to its flammability and potential health hazards.

InChI:InChI=1/C16H36Si/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4/h5-16H2,1-4H3

Upstream product

• 109-65-9 1-bromo-butane 
• 109-72-8 n-butyllithium 
• 78-10-4 tetraethoxy orthosilicate 
• 60-29-7 diethyl ether 
• 693-03-8 n-butyl magnesium bromide 
• 562-90-3 tetraacetoxysilane 
• 33446-82-1 1-bromosilatrane 
• 71229-63-5 1-butylsilatrane 
• 995-45-9 tributylchlorosilane 
• 10026-04-7 tetrachlorosilane 
• 18407-09-5 tert-butoxy-tributyl-silane 
• 4782-00-7 ethoxy-tributyl-silane 
• 15811-64-0 Tributylmethoxysilane 
• 998-41-4 tributylsilane 

Downstream Products

• 132381-81-8 5-butylbenzene-1,2,4-tricarbonitrile 
• 5009-92-7 1-methyl-1-butylcyclohexane 
• 82166-21-0 methyl cyclohexane 
• 72993-33-0 1-butyl-2-methylcyclohexane 
• 52829-83-1 1-butyl-3-methyl-cyclohexane 
• 106-97-8 n-butane 
• 995-45-9 tributylchlorosilane 
• 57775-05-0 2-n-butylbenzonitrile 
• 78-78-4 methylbutane 
• 4032-86-4 3,3-dimethyl-heptane 
• 3074-71-3 2,3-dimethylheptane 
• 20651-73-4 4-butylbenzonitrile 

Relevant articles and documents

Closed-shell ion pairs: Cation and aggregate dynamics of tetraalkylammonium salts in a ion-pairing solvent

Tetrabutylammonium ion (1) forms tight ion pairs with small anions (Cl-, BH4-) in GDCl3 solution. These ion pairs aggregate as a response to increasing solution concentration with little temperature dependence. Maximum aggregate size is approximately four ion pairs, as measured by comparing self-diffusion coefficients of the aggregates with that of an internal nonaggregating standard of the same shape and nominal size, tetrabutylsilane (2). The magnitudes of steady state interionic 1H{1H} NOEs observed between 1 and the BH4- anion in CDCl3 as a function of temperature in solutions of fixed concentration are well fit to the standard theoretical expression by assuming a single aggregate size that is independent of temperature. A simplified model-free analysis was applied to steady state 15N{1H} NOE and 15N T1 measured at several magnetic field strengths, using 15N-labeled 1 to obtain estimates for reorientational correlation times for the ion aggregates. A similar analysis of 13C{1H} NOE and 13C T1 gives local effective correlation times for C-H bond vectors of the 1-CH2 carbon of 1 and order parameters relating the local motion to overall cation motion. Comparison of these correlation times with those obtained from analysis of 29Si{1H} NOE, 13C{1H} NOE, and 13C T1 for silane 2 provides an estimate of aggregate size which is independent of that obtained by diffusion, with good agreement between the different approaches.

Pentacoordinate silicon compounds. Reactions of silatranes with nucleophiles

The reactions of hydro, organyl and halosilatranes with nucleophiles have been studied.Substitution involving cleavage of equatorial Si-O bonds is always observed.Silitranes exhibit reactivity quite different from that of analogous trialkoxysilanes or anionic pentacoordinate silicon compounds.