perfluoropentane perfluoropentane perfluoropentane (pfp) or dodecafluoropentane; also known as perflenapent (inn/usan) is a fluorocarbon, the fluorinated analogue of pentane. it is a liquid that boils at slightly over room temperature. perfluoropentane names preferred iupac name dodecafluoropentane other names perfluoropentane identifiers cas number 678-26-2 3d model (jsmol) interactive image beilstein reference 1712388 chebi chebi:39428 chembl chembl1899801 chemspider 12154 echa infocard 100.010.589 ec number 211-647-5 kegg d05436 pubchem cid 12675 unii 483au1y5cz comptox dashboard (epa) dtxsid3046613 inchi inchi=1s/c5f12/c6-1(7,2(8,9)4(12,13)14)3(10,11)5(15,16)17key: njcbushgcbersk-uhfffaoysa-ninchi=1/c5f12/c6-1(7,2(8,9)4(12,13)14)3(10,11)5(15,16)17key: njcbushgcbersk-uhfffaoyah smiles c(c(c(f)(f)f)(f)f)(c(c(f)(f)f)(f)f)(f)f properties chemical formula c5f12 molar mass 288.036 g·mol−1 density 1.63 g/ml (liquid, 25 °c) 1.59 g/ml (liquid, 35 °c) 12.25 kg/m³ (gas, 1 atm, 10 times air density) melting point −115 °c (−175 °f; 158 k) boiling point 28 °c (82 °f; 301 k) heat of vaporization = 21 cal/g vapor pressure 83.99 kpa (25 °c) viscosity 0.652 mpa*s (25 °c) thermochemistry heat capacity (c) 0.26 cal/(g • k) pharmacology atc code v08da03 (who) hazards ghs labelling: pictograms signal word warning hazard statements h315, h319, h335 precautionary statements p261, p264, p271, p280, p302+p352, p304+p340, p305+p351+p338, p312, p321, p332+p313, p337+p313, p362, p403+p233, p405, p501 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references it has several biomedical applications including: propellant for pressurized metered dose inhalers; gas core in microbubble ultrasound contrast agents; and occlusion therapy via the conversion of nanometer liquid droplets into micrometer sized gas microbubbles (acoustic droplet vaporization).