Bis(trimethylsilyl)acetylene, 99%

Description

CAS: 14630-40-1 | C8H18Si2 | 170.402 g/mol

BTMSA is used as starting reagent in the synthesis of functionalized 4-R-1,2-bis(trimethylsilyl)benzenes. It is also used in the synthesis of (+)-brasilenyne2 and (β-diketanato)Ag(BTMSA). Bis(trimethylsilyl)acetylene is a ligand that binds to a central metal ion (e.g. Titanium) to create a coordination complex. One of its complexes, Permethyltitanocene-bis(trimethylsilyl)acetylene, is a catalyst for the head-to-tail dimerization of 1-alkynes (e.g. 3-Penten-1-yne [P227430]).

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
BTMSA is used as starting reagent in the synthesis of functionalized 4-R-1,2-bis(trimethylsilyl)benzenes. It is also used in the synthesis of (+)-brasilenyne2 and (β-diketanato)Ag(BTMSA). Bis(trimethylsilyl)acetylene is a ligand that binds to a central metal ion (e.g. Titanium) to create a coordination complex. One of its complexes, Permethyltitanocene-bis(trimethylsilyl)acetylene, is a catalyst for the head-to-tail dimerization of 1-alkynes (e.g. 3-Penten-1-yne [P227430]).

Solubility
Not miscible or difficult to mix in water. Soluble in Chloroform and Methanol.

Notes
Store away from oxidizing agents. Do not store together with acids.

Specifications

Chemical Identifiers

• CAS: 14630-40-1
• Molecular Formula: C8H18Si2
• Molecular Weight (g/mol): 170.402
• MDL Number: MFCD00008276
• InChI Key: ZDWYFWIBTZJGOR-UHFFFAOYSA-N
• Synonym: bis trimethylsilyl acetylene, silane, 1,2-ethynediylbis trimethyl, 1,2-bis trimethylsilyl ethyne, btmsa, 1,2-bis-trimethylsilanyl-ethyne, ethyne-1,2-diylbis trimethylsilane, 2,5-disilahex-3-yne, 2,2,5,5-tetramethyl, trimethyl 2-trimethylsilyl ethynyl silane, silane, 1,1'-1,2-ethynediyl bis 1,1,1-trimethyl
• PubChem CID: 84564
• IUPAC Name: trimethyl(2-trimethylsilylethynyl)silane
• SMILES: C[Si](C)(C)C#C[Si](C)(C)C

• Melting Point: 20°C to 24°C
• Density: 0.77
• Boiling Point: 134°C to 136°C
• Flash Point: 2°C (35°F)
• Refractive Index: 1.427
• Linear Formula: (CH₃)₃SiC≡CSi(CH₃)₃
• Quantity: 250 g
• UN Number: UN1993
• Beilstein: 906870
• Solubility Information: Not miscible or difficult to mix in water. Soluble in Chloroform and Methanol.
• Formula Weight: 170.4
• Percent Purity: 99%
• Chemical Name or Material: Bis (trimethylsilyl)acetylene

Safety and Handling

Hazard Category	H225
Hazard Statement	GHS H Statement H226 Flammable liquid and vapor.
Precautionary Statement	P210-P233-P240-P241-P242-P243-P280-P303+P361+P353-P370+P378q-P501c
DOTInformation	Transport Hazard Class: 3; Packing Group: III; Proper Shipping Name: FLAMMABLE LIQUIDS, N.O.S.
EINECSNumber	238-671-9
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only