Some fluorine-substituted organic materials meet criteria for heat-exchange fluids in contact with sulfuric acid. Most promising of these are perfluoropropylene oxide polymers with degree of polymerization (DP) between 10 and 50. It is desirable to have DP in high range because vapor pressure of material decreases as DP increases, and high-DP liquids have lower loss due to vaporization.
Heat-Exchange Fluids for Sulfuric Acid Vaporizers
NASA Tech Briefs ; 6 , 3
01.12.1982
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