Trimethylsilylacetylene

Trimethylsilylacetylene
Names
	Preferred IUPAC name Ethynyltri(methyl)silane
Identifiers
CAS Number	1066-54-2 ;
3D model (JSmol)	Interactive image;
Abbreviations	TMSA
ChemSpider	59499 ;
ECHA InfoCard	100.012.655
EC Number	213-919-9;
PubChem CID	66111;
CompTox Dashboard (EPA)	DTXSID7061435 ;
	InChI InChI=1S/C5H10Si/c1-5-6(2,3)4/h1H,2-4H3 Key: CWMFRHBXRUITQE-UHFFFAOYSA-N ; InChI=1S/C5H10Si/c1-5-6(2,3)4/h1H,2-4H3; InChI=1S/C5H10Si/c1-5-6(2,3)4/h1H,2-4H3 Key: CWMFRHBXRUITQE-UHFFFAOYSA-N;
	SMILES C#C[Si](C)(C)C;
Properties
Chemical formula	(CH3)3Si−C≡CH
Molar mass	98.220 g·mol−1
Appearance	colorless liquid
Density	0.709 g/mL
Boiling point	53 °C (127 °F; 326 K)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H225, H315, H318, H319, H335
Precautionary statements	P210, P233, P240, P241, P242, P243, P261, P264, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P321, P332+P313, P337+P313, P362, P370+P378, P403+P233, P403+P235, P405, P501
Safety data sheet (SDS)	External MSDS
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Trimethylsilylacetylene is the organosilicon compound with the formula (CH₃)₃Si−C≡CH. A colorless liquid, "tms acetylene", as it is also called, is used as a source of ⁻C≡CH anion in organic synthesis.