Chlorine pentafluoride

Chlorine pentafluoride
Identifiers
CAS Number	13637-63-3 ;
3D model (JSmol)	Interactive image;
ChemSpider	55559 ;
ECHA InfoCard	100.033.734
PubChem CID	61654;
RTECS number	FO2975000;
UNII	O4RJ1HW01H ;
CompTox Dashboard (EPA)	DTXSID90894056 ;
	InChI InChI=1S/ClF5/c2-1(3,4,5)6 Key: KNSWNNXPAWSACI-UHFFFAOYSA-N ;
	SMILES FCl(F)(F)(F)F;
Properties
Chemical formula	ClF5
Molar mass	130.445 g/mol
Appearance	colorless gas
Odor	sweet
Density	4.5 kg/m3 (g/L)
Melting point	−103 °C (−153 °F; 170 K)
Boiling point	−13.1 °C (8.4 °F; 260.0 K)
Solubility in water	Hydrolyzes
Structure
Molecular shape	Square pyramidal
Thermochemistry
Std molar; entropy (S⦵298)	310.73 J/(mol·K)
Std enthalpy of; formation (ΔfH⦵298)	−238.49 kJ/mol
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Fatal if inhaled. Causes permanent blindness and severe skin and respiratory tract burns.
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H270, H280, H314, H330
Precautionary statements	P220, P244, P260, P264, P271, P280, P284, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P320, P321, P363, P370+P376, P403, P403+P233, P405, P410+P403, P501
	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

Chlorine pentafluoride is an interhalogen compound with formula ClF₅. This colourless gas is a strong oxidant that was once a candidate oxidizer for rockets. The molecule adopts a square pyramidal structure with C_4v symmetry, as confirmed by its high-resolution ¹⁹F NMR spectrum. It was first synthesized in 1963.