nickel(+2) cation sulfate hexahydrate Nickelous sulfate hexahydrate 10101-97-0 N4882_SIAL 31483_RIEDEL NICKEL SULFATE HEXAHYDRATE Nickel(2+) sulfate hexahydrate Nickel(II) sulfate hexahydrate 227676_SIAL Nickel (II) sulfate hexahydrate 467901_SIAL