1-(Trimethylsilyl)-1-propyne

Synonym(s):Trimethyl-1-propynylsilane

CAS NO.：6224-91-5
Empirical Formula: C6H12Si
Molecular Weight: 112.25
MDL number: MFCD00009271
EINECS: 228-314-5
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-28 02:08:03

What is 1-(Trimethylsilyl)-1-propyne?

Chemical properties

1-(Trimethylsilyl)-1-propyne is CLEAR COLOURLESS LIQUID

The Uses of 1-(Trimethylsilyl)-1-propyne

1-(Trimethylsilyl)propyne is used in the synthesis of alkynyl silane derivative.

The Uses of 1-(Trimethylsilyl)-1-propyne

1-Trimethylsilyl-1-propyne is employed in the preparation of alkynyl silane derivatives. It is also used to prepare highly substituted indenes using palladium-catalyzed carboannulation. Further, it plays an important role in the preparation of indenones through a rhodium-catalyzed reaction with 2-bromophenylboronic acids.

Properties of 1-(Trimethylsilyl)-1-propyne

Melting point:	-69°C
Boiling point:	99-100 °C (lit.)
Density	0.758 g/mL at 25 °C (lit.)
vapor density	>1 (vs air)
refractive index	n20/D 1.417(lit.)
Flash point:	25 °F
storage temp.	2-8°C
solubility	Miscible with toluene.
form	Liquid
color	Clear colorless
Specific Gravity	0.758
Hydrolytic Sensitivity	4: no reaction with water under neutral conditions
BRN	1071311
CAS DataBase Reference	6224-91-5(CAS DataBase Reference)
NIST Chemistry Reference	1-(Trimethylsilyl)-1-propyne(6224-91-5)

Safety information for 1-(Trimethylsilyl)-1-propyne

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. P233:Keep container tightly closed. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P242:Use only non-sparking tools. P243:Take precautionary measures against static discharge.