12218-52-9 22578-17-2 Pentafluorostannite sodium Sodium mu-fluorotetrafluorodistannate(1-) Sodium pentafluorodistannate(II) (7CI) Sodium pentafluorostannite Sodium tin fluoride (NaSn2F5) Sodium tin fluostannate(II) (6CI) Stannate(1-), mu-fluorotetrafluorodi-, sodium