Potassium perrhenate10466-65-6100 % similar Perrhenic acid13768-11-167 % similar Potassium tin oxide (K2sno3)12142-33-550 % similar Potassium molybdate13446-49-650 % similar Ammonium perrhenate13598-65-750 % similar Potassium metavanadate13769-43-250 % similar Potassium tungstate (K2wo4)7790-60-550 % similar Potassium osmate10022-66-940 % similar Heavy water7789-20-033 % similar