Look, if YOU find a fluid that is incompressible in liquid form, liquid at room temperature, gaseous at temperatures lower than the melting points of most construction materials, has a low viscosity, can dissolve almost anything but is completely nontoxic, has a high heat capacity, is capable of ionic dissociation, is polar, and, oh yeah, also incredibly cheap, do let us know!
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Look, if YOU find a fluid that is incompressible in liquid form, liquid at room temperature, gaseous at temperatures lower than the melting points of most construction materials, has a low viscosity, can dissolve almost anything but is completely nontoxic, has a high heat capacity, is capable of ionic dissociation, is polar, and, oh yeah, also incredibly cheap, do let us know!