(TRIETHYLSILYL)ACETYLENE

Synonym(s):Ethynyltriethylsilane

CAS NO.：1777-03-3
Empirical Formula: C8H16Si
Molecular Weight: 140.3
MDL number: MFCD00075373
EINECS: 628-759-9
SAFETY DATA SHEET (SDS)
Update Date: 2025-09-25 17:15:13

What is (TRIETHYLSILYL)ACETYLENE?

Chemical properties

Clear colorless to faintly yellow liquid

The Uses of (TRIETHYLSILYL)ACETYLENE

(Triethylsilyl)acetylene may be used in the synthesis of triethylsilylethynyl anthradithiophenes, such as :

2,8-dimethyl-5,11-bis(triethylsilylethynyl)ADT (ADT= anthradithiophene)
2,8-diethyl-5,11-bis(triethylsilylethynyl)ADT
2,8-dipropyl-5,11-bis(triethylsilylethynyl)ADT

What are the applications of Application

(Triethylsilyl)acetylene is a large, trialkylsilyl-protected terminal alkyne

General Description

(Triethylsilyl)acetylene, a bulky trialkylsilyl-protected alkyne, undergoes Cadiot-Chodkiewicz cross-coupling reaction with various bromoalkynes to yield synthetically useful unsymmetrical diynes. Rhodium-catalyzed dimerization of (triethylsilyl)acetylene has been reported.

Properties of (TRIETHYLSILYL)ACETYLENE

Melting point:	95-97 °C(Solv: chloroform (67-66-3); hexane (110-54-3))
Boiling point:	136 °C
Density	0.783 g/mL at 25 °C(lit.)
refractive index	n20/D 1.433(lit.)
Flash point:	63 °F
storage temp.	Flammables area
form	liquid
Specific Gravity	0.783
color	colorless
Hydrolytic Sensitivity	4: no reaction with water under neutral conditions
BRN	1743814
CAS DataBase Reference	1777-03-3(CAS DataBase Reference)

Safety information for (TRIETHYLSILYL)ACETYLENE

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02
GHS Hazard Statements	H225:Flammable liquids
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P370+P378:In case of fire: Use … for extinction. P403+P235:Store in a well-ventilated place. Keep cool.