218170

Ethynyltrimethylsilane

98%

• Synonym(s): Trimethylsilylacetylene
• Linear Formula: (CH₃)₃SiC≡CH
• CAS Number: 1066-54-2
• Molecular Weight: 98.22
• Beilstein: 906752
• MDL number: MFCD00008569
• UNSPSC Code: 12352100
• PubChem Substance ID: 24853048
• NACRES: NA.22

Properties

• vapor pressure: 4.18 psi ( 20 °C)
• Assay: 98%
• form: liquid
• refractive index: n20/D 1.388 (lit.)
• bp: 53 °C (lit.)
• density: 0.709 g/cm³ (lit.)
• storage temp.: 2-8°C
• SMILES string: C[Si](C)(C)C#C
• InChI: 1S/C5H10Si/c1-5-6(2,3)4/h1H,2-4H3
• InChI key: CWMFRHBXRUITQE-UHFFFAOYSA-N

Description

General description

Laser-induced polymerization of gaseous ethynyltrimethylsilane was used for efficient chemical vapour deposition of polycarbosilane films. Ethynyltrimethylsilane acts as substrate for nickel-catalyzed cross-coupling with benzonitriles.

Application

Ethynyltrimethylsilane was used in:

• microwave-assisted, one-pot, three-step Sonogashira cross-coupling-desilylation-cycloaddition reaction for the preparation of 1,4-disubstituted 1,2,3-triazoles
• synthesis of poly(ethynyltrimethylsilane) containing Pd (II) coordination sites
• pyrazole synthesis via 1,3-dipolar cycloaddition of diazo compounds to acetylenes

Safety Information

• Pictograms: GHS02,GHS07
• Signal Word: Danger
• Hazard Statements: H225,H315,H319
• Precautionary Statements: P210 - P233 - P240 - P241 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Flam. Liq. 2 - Skin Irrit. 2
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 1
• Flash Point(F): -29.2 °F
• Flash Point(C): -34 °C
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves