Octafluorocyclobutane

Octafluorocyclobutane
Names
	Preferred IUPAC name Octafluorocyclobutane
	Other names Freon-C-318, perfluorocyclobutane
Identifiers
CAS Number	115-25-3 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	1909266
ChEBI	CHEBI:31007 ;
ChEMBL	ChEMBL444147 ;
ChemSpider	13846040 ;
ECHA InfoCard	100.003.705
EC Number	204-075-2;
E number	E946 (glazing agents, ...)
Gmelin Reference	131113
PubChem CID	8263;
UNII	V9P1D0A21K ;
CompTox Dashboard (EPA)	DTXSID9041811 ;
	InChI InChI=1S/C4F8/c5-1(6)2(7,8)4(11,12)3(1,9)10 Key: BCCOBQSFUDVTJQ-UHFFFAOYSA-N ; InChI=1/C4F8/c5-1(6)2(7,8)4(11,12)3(1,9)10 Key: BCCOBQSFUDVTJQ-UHFFFAOYAW;
	SMILES C1(C(C(C1(F)F)(F)F)(F)F)(F)F;
Properties
Chemical formula	C4F8
Molar mass	200.03 g/mol
Appearance	colourless gas
Density	1.637 g/cm3 at −5.8 °C (liquid); 9.97 kg/m3 at −6 °C and 1 atm (gas); 8.82 kg/m3 15 °C and 1 atm (gas)
Melting point	−40.1 °C (−40.2 °F; 233.1 K)
Boiling point	−5.8 °C (21.6 °F; 267.3 K)
Solubility in water	0.016 vol/vol (1.013 bar and 20 °C)
Viscosity	109e-6 Poise (1.013 bar and 0 °C)
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H411
Precautionary statements	P273, P391, 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

Octafluorocyclobutane, or perfluorocyclobutane, C₄F₈, is an organofluorine compound which enjoys several niche applications. Octafluorocyclobutane is a colourless gas and shipped as a liquefied gas. It is the perfluorinated analogue of cyclobutane whereby all C–H bonds are replaced with C–F bonds.