18209-61-5

Basic information

• Product Name: DIMETHYLISOPROPYLSILANE
• Synonyms: DIMETHYLISOPROPYLSILANE;ISOPROPYLDIMETHYLSILANE;Dimethylisopropylsilane 98%;dimethyl(propan-2-yl)silane
• CAS NO: 18209-61-5
• Molecular Formula: C₅H₁₄Si
• Molecular Weight: 102.25
• Product Categories: Organometallic Reagents;Organosilicon;Others;Chemical Synthesis;Organometallic Reagents
• Mol File: 18209-61-5.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 66-67 °C(lit.)
• Flash Point: −22 °F
• Appearance: /
• Density: 0.724 g/mL at 25 °C(lit.)
• Vapor Pressure: 163mmHg at 25°C
• Refractive Index: n20/D 1.391(lit.)
• CAS DataBase Reference: DIMETHYLISOPROPYLSILANE(CAS DataBase Reference)
• NIST Chemistry Reference: DIMETHYLISOPROPYLSILANE(18209-61-5)
• EPA Substance Registry System: DIMETHYLISOPROPYLSILANE(18209-61-5)

Safety Data

• Hazard Codes: F,Xi
• Statements: 11-36/37/38
• Safety Statements: 16-26-36/37/39
• RIDADR: UN 1993 3/PG 2
• WGK Germany: 3
• HazardClass: 3.1
• PackingGroup: I
• Hazardous Substances Data: 18209-61-5(Hazardous Substances Data)

Usage

General Description

DIMETHYLISOPROPYLSILANE is an organosilicon compound with the chemical formula (CH3)2CHSiH(CH3)2. It is a colorless liquid with a faint odor, used as a reducing agent in organic synthesis and as a catalyst in hydrosilylation reactions. It is also employed as a silylating reagent in organic chemistry, allowing for the conversion of hydroxyl and amino groups into their corresponding trimethylsilyl derivatives. Additionally, dimethylisopropylsilane is used as a component in silicone polymers and resins, offering improved flexibility and heat resistance. While it is relatively stable and non-reactive under normal conditions, it should be handled with care as it is flammable and can release hazardous fumes when heated to decomposition.

InChI:InChI=1/C5H14Si/c1-5(2)6(3)4/h5-6H,1-4H3

Upstream product

• 3634-56-8 isopropyldimethylsilyl chloride 
• 1066-35-9 dimethylmonochlorosilane 
• 920-39-8 isopropylmagnesium bromide 

Downstream Products

• 93-54-9 1-Phenyl-1-propanol 
• 34557-54-5 methane 
• 36957-90-1 1,3-diisopropyltetramethyldisiloxane 
• 1254592-78-3 C₁₅H₃₂OSi 

Relevant articles and documents

Mass Spectra of Some High Molecular Weight Tetra(alkyl)silanes

The mass spectra of tetra(alkyl)silanes having one short and three long alkyl groups were recorded (C20 - C32).These silanes did not give molecular ions, and the dominant course of fragmentation involved the loss of alkyl groups, followed by elimination of alkenes.The loss of alkyl groups followed the sequence iso-Pr > Et, Pr,...C14H29 >> Me.With alkyl groups longer than hexyl, a rearrangement was observed in which n-alkanes were eliminated from the base ion.When the alkyl group was hexyl, the alkane eliminated was methane; when the alkyl group was heptyl, ethane was expelled; with octyl, it was propane; and with decyl, n-pentane was expelled.Deuterium labeling showed that at least two modes of rearrangement were occuring.

Continued search for elusive persistent trivalent organosilyl cations: The claimed trimethylsilyl cation revisited. Attempted preparation of cyclic and halogen-bridged organosilicenium ions

Comparison of ab initio/IGLO calculated 1H, 13C, and 29Si NMR chemical shifts with the experimental data on trimethylsilyl perchlorete and related derivatives supports the conclusion that no long-lived persistent trimethyl