Trimethylsilyl acetate

Trimethylsilyl acetate
Names
	IUPAC name Trimethylsilyl acetate
	Other names Acetic acid trimethylsilyl ester; Acetoxytrimethylsilane; TMSOAc;
Identifiers
CAS Number	2754-27-0;
3D model (JSmol)	Interactive image;
EC Number	220-404-2;
PubChem CID	75988;
UNII	LXX47M44WG;
CompTox Dashboard (EPA)	DTXSID90883723;
	InChI InChI=1S/C5H12O2Si/c1-5(6)7-8(2,3)4/h1-4H3 Key: QHUNJMXHQHHWQP-UHFFFAOYSA-N;
	SMILES CC(=O)O[Si](C)(C)C;
Properties
Chemical formula	CH3COOSi(CH3)3
Molar mass	132.234 g·mol−1
Appearance	Colorless liquid
Odor	Mild, sweet
Density	0.882 g/cm3, relative vapor density 4.57 (air = 1)
Melting point	−32 °C (−26 °F; 241 K)
Boiling point	107.5 °C (225.5 °F; 380.6 K)
Solubility in water	Soluble, reacts
Solubility	Soluble in diethyl ether and ethanol
Vapor pressure	47 hPa at 30 °C
Refractive index (nD)	1.388
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Highly flammable
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H225, H315, H319
Precautionary statements	P210, P233, P240, P241, P242, P243, P264, P280, P303+P361+P353, P370+P378, P403+P235, P501
Flash point	19 °C (66 °F; 292 K)
Related compounds
Related compounds	tert-Butyl acetate; Trimethyltin acetate;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Trimethylsilyl acetate, also known as TMSOAc, is an organosilicon compound with the chemical formula C H₃COOSi(CH₃)₃. It is a colorless liquid. It is the silyl ester analog of tert-butyl acetate, having a trimethylsilyl group −Si(CH₃)₃ in place of the tert-butyl group −C(CH₃)₃.