TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Salt : The organic salts of which theses are two or more are organic salts represented by general formulae (I), (II), (III) and/or (IV).R1a - R5a, R7a, R9a, R10a = H, halogen atom, alkyl cycloalkyl, heterocyclic, haloalkyl, aralkyl, aryl, alkoxy, aryloxy or aralkyloxy group ;R8a = H atom, alkyl, cycloalkyl, heterocylic, haloalkyl, aralkyl or aryl group ;R6a, R11a, R12 - R19 = alkyl, cycloalkyl, heterocyclic, haloalkyl, aralkyl or aryl group ;X1 - - X4- = conjugated base of a Broensted acidAt least one or all of the two or more organic salts are in the solid state at RT. At least one or all of the two or more organic salts are represented by general formula (V) and/or (VI).R1 - R5, R7, R9, R10 = H, halogen atom, alkyl cycloalkyl, heterocyclic, haloalkyl, aralkyl, aryl, alkoxy, aryloxy or aralkyloxy group ;R6, R11 = 1-10C alkyl group at least one H atom of which is substituted with F ;X1 -, X2 - = conjugated base of a Broensted acidAll of the two or more organic salts are compounds represented by general formula (V) or (VI). Of the two or more organic salts, at least one is a room-temperature solid organic salt represented by general formula (V) and at least one of the others is a room-temperature solid organic salt represented by general formula (VI). One of the two or more organic salts has an anion moiety represented by general formula (A) and the others have an anion moiety represented by general formula (B).Rf, Rf' = polyfluoroalkyl groups different from each other ;Rf = polyfluoroalkyl groupPreferred Process : A process for producing the room-temperature molten salt comprises mixing two or more organic salts having both the anion moieties and the organic cation moieties different from each other. Preferred Application : A battery, which is a non-aqueous Li- secondary battery, comprises an electrolyte containing the room-temperature molten salt, an anode, a cathode and a separator. A capacitor and a double layered capacitor contain the electrolyte containing the room-temperature molten salt. WIDER DISCLOSURE - An electrolyte contains the invented room- temperature molten salt. An organic reaction solvent and an extracting solvent comprise the invented room-temperature molten salt.    EXAMPLE - 1-(2,2,2-trifluoroethyl)-3methyl pyridinium trifluoromethane sulphonate (30 mg) and 1-(2,2,2-trifluoroethyl)pyridinium bis((trifluoromethyl)sulfonyl)amide (30 mg) were mixed in a mortar so as to obtain a colorless transparent room temperature molten salt.