| abstract |
A granule or powder composed of a compound represented by the formula [I] has a mode diameter of 80 μm or less, a median diameter of 45 μm or less, and/or (mode size)/ The ratio of (median diameter) is 1.7 or less, and it is preferably used for an electrolyte or the like.nIn the formula [I], R1 and R2 each independently represent a fluorinated alkyl group or a fluorine atom having 1 to 6 carbon atoms, and Y+ represents an alkali metal cation or an ammonium cation. |