Perchloryl fluoride

Perchloryl fluoride
Names
	IUPAC name Perchloryl fluoride
	Other names Chlorine oxyfluoride; Perchlorofluoride; Chlorine fluorine oxide; Trioxychlorofluoride; Perchloric acid fluoride;
Identifiers
CAS Number	7616-94-6 ;
3D model (JSmol)	Interactive image;
ChemSpider	22680 ;
ECHA InfoCard	100.028.660
EC Number	231-526-0;
PubChem CID	24258;
RTECS number	SD1925000;
UNII	73NC8XM516 ;
CompTox Dashboard (EPA)	DTXSID60894169 ;
	InChI InChI=1S/ClFO3/c2-1(3,4)5 Key: XHFXMNZYIKFCPN-UHFFFAOYSA-N ; InChI=1/ClFO3/c2-1(3,4)5 Key: XHFXMNZYIKFCPN-UHFFFAOYAO;
	SMILES FCl(=O)(=O)=O;
Properties
Chemical formula	ClO3F
Molar mass	102.4496 g/mol
Appearance	Colorless gas
Odor	sweet odor
Density	1.434 g/cm3
Melting point	−147.8 °C (−234.0 °F; 125.3 K)
Boiling point	−46.7 °C (−52.1 °F; 226.5 K)
Critical point (T, P)	95.2 °C (203.4 °F; 368.3 K), 53 standard atmospheres (5,400 kPa; 780 psi)
Solubility in water	0.06 g/(100 ml) (20 °C), slow hydrolysis
Vapor pressure	10.5 atm (20 °C)
Viscosity	3.91 x 10−3 Pa·s (@ melting point)
Structure
Molecular shape	Tetrahedral
Thermochemistry
Std molar; entropy (S⦵298)	278.97 J/(mol·K)
Std enthalpy of; formation (ΔfH⦵298)	−21.42 kJ/mol
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	oxidizing, toxic. Non-corrosive.
NFPA 704 (fire diamond)	3 0 3 OX
Threshold limit value (TLV)	3 ppm
	Lethal dose or concentration (LD, LC):
LC50 (median concentration)	385 ppm (rat, 4 hr); 451 ppm (dog, 4 hr)
LCLo (lowest published)	2000 ppm (rat, 40 min); 451 ppm (dog, 4 hr)
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 3 ppm (13.5 mg/m3)
REL (Recommended)	TWA 3 ppm (14 mg/m3) ST 6 ppm (28 mg/m3)
IDLH (Immediate danger)	100 ppm
	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

Perchloryl fluoride is a reactive gas with the chemical formula Cl O₃F. It has a characteristic sweet odor that resembles gasoline and kerosene. It is toxic and is a powerful oxidizing and fluorinating agent. It is the acid fluoride of perchloric acid.

In spite of its small enthalpy of formation (Δ_fH° = −5.2 kcal/mol (−22 kJ/mol)), it is kinetically stable, decomposing only at 400 °C.^: 380 It is quite reactive towards reducing agents and anions, however, with the chlorine atom acting as an electrophile.^: 382 It reacts explosively with reducing agents such as metal amides, metals, hydrides, etc. Its hydrolysis in water occurs very slowly, unlike that of chloryl fluoride.