Silicon tetrafluoride

Silicon tetrafluoride
Names
	IUPAC names Tetrafluorosilane; Silicon tetrafluoride
	Other names Silicon fluoride; Fluoro acid air
Identifiers
CAS Number	7783-61-1 ;
3D model (JSmol)	Interactive image;
ChemSpider	22962;
ECHA InfoCard	100.029.104
EC Number	232-015-5;
PubChem CID	24556;
RTECS number	VW2327000;
UNII	K60VCI56YO ;
UN number	1859
CompTox Dashboard (EPA)	DTXSID0064830 ;
	InChI InChI=1S/F4Si/c1-5(2,3)4 Key: ABTOQLMXBSRXSM-UHFFFAOYSA-N;
	SMILES F[Si](F)(F)F;
Properties
Chemical formula	SiF4
Molar mass	104.0791 g/mol
Appearance	colourless gas, fumes in moist air
Density	1.66 g/cm3, solid (−95 °C); 4.69 g/L (gas)
Melting point	−95.0 °C (−139.0 °F; 178.2 K)
Boiling point	−90.3 °C (−130.5 °F; 182.8 K)
Critical point (T, P)	−14.15 °C (6.5 °F; 259.0 K), 36.71 standard atmospheres (3,719.6 kPa; 539.5 psi)
Solubility in water	decomposes
Structure
Molecular shape	tetrahedral
Dipole moment	0 D
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	toxic, corrosive
	GHS labelling:[1]
Pictograms
Signal word	Danger
Hazard statements	H280, H300, H310, H314, H330, H331
Precautionary statements	P260, P262, P264, P270, P271, P280, P284, P301+P316, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P320, P321, P330, P361+P364, P363, P403+P233, P405, P410+P403, P501 Preview warning: Omit Rules: keep P260, omit P261
NFPA 704 (fire diamond)	3 0 2 W
	Lethal dose or concentration (LD, LC):
LCLo (lowest published)	69.220 mg/m3 (rat, 4 hr)
Safety data sheet (SDS)	ICSC 0576
Related compounds
Other anions	Silicon tetrachloride; Silicon tetrabromide; Silicon tetraiodide
Other cations	Carbon tetrafluoride; Germanium tetrafluoride; Tin tetrafluoride; Lead tetrafluoride
Related compounds	Hexafluorosilicic acid
	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

Silicon tetrafluoride or tetrafluorosilane is a chemical compound with the formula Si F₄. This colorless gas is notable for having a narrow liquid range: its boiling point is only 4 °C above its melting point. It was first prepared in 1771 by Carl Wilhelm Scheele by dissolving silica in hydrofluoric acid, and later synthesized by John Davy in 1812. It is a tetrahedral molecule and is corrosive.