... clean agents. The product has a heat of vaporization of 88.1 kJ/kga and low vapor pressure. Although it is a ... -2-methylpentane-3-one; its ASHRAE nomenclature is FK 5-1-12 — the way it is designated in NFPA 2001 and ... .Chemically, it is a fluorinated ketone with the systematic name 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3 ...