Perfluoroheptane

Perfluoroheptane, C₇F₁₆, (usually referring to the straight chain molecule called n-perfluoroheptane) is a perfluorocarbon.^[2] It is hydrophobic (water-insoluble) and oleophobic (oil-insoluble). It is used in deacidification of paper as a medium carrying powdered magnesium oxide.^[3]

n-Perfluoroheptane

Ball-and-stick model of perfluoroheptane
Coloured water (top) and perfluoroheptane (bottom). Perfluoroheptane is hydrophobic and is denser than water, so it sinks to the bottom and the animals pictured cannot penetrate it.
Names
Preferred IUPAC name Hexadecafluoroheptane
Identifiers
CAS Number	335-57-9 Y
3D model (JSmol)	Interactive image
ChemSpider	9179
ECHA InfoCard	100.005.812
PubChem CID	9553
UNII	I23ZVD1P1L Y
CompTox Dashboard (EPA)	DTXSID8052019
InChI InChI=1S/C7F16/c8-1(9,2(10,11)4(14,15)6(18,19)20)3(12,13)5(16,17)7(21,22)23 Key: LGUZHRODIJCVOC-UHFFFAOYSA-N
SMILES C(C(C(C(F)(F)F)(F)F)(F)F)(C(C(C(F)(F)F)(F)F)(F)F)(F)F
Properties
Chemical formula	C7F16
Molar mass	388.051 g·mol−1
Appearance	clear liquid[1]
Density	1.706 g/cm3
Boiling point	80~82°C[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references